Which of the following couldbe the equation of a circle tangent to the x-axis at and having a radius of 3? I. II. III.

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Which of the following couldbe the equation of a circle tangent to the x-axis at <img alt='images' src='https://www.fatskills.com/images2/SAT/eq04089.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:mfenced open='(' close=')'><m:mrow><m:mrow><m:mn>5</m:mn><m:mo>,</m:mo><m:mtext> </m:mtext><m:mn>0</m:mn></m:mrow></m:mrow></m:mfenced></m:mrow></m:math>--> and having a radius of 3? I.   <img alt='images' src='https://www.fatskills.com/images2/SAT/eq04090.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:msup><m:mrow><m:mrow><m:mfenced open='(' close=')'><m:mrow><m:mrow><m:mi>x</m:mi><m:mo>+</m:mo><m:mn>5</m:mn></m:mrow></m:mrow></m:mfenced></m:mrow></m:mrow><m:mrow><m:mn>2</m:mn></m:mrow></m:msup><m:mo>+</m:mo><m:msup><m:mrow><m:mrow><m:mfenced open='(' close=')'><m:mrow><m:mrow><m:mi>y</m:mi><m:mo>+</m:mo><m:mn>3</m:mn></m:mrow></m:mrow></m:mfenced></m:mrow></m:mrow><m:mrow><m:mn>2</m:mn></m:mrow></m:msup><m:mo>=</m:mo><m:mn>9</m:mn></m:mrow></m:math>--> II.  <img alt='images' src='https://www.fatskills.com/images2/SAT/eq04091.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:msup><m:mrow><m:mrow><m:mfenced open='(' close=')'><m:mrow><m:mrow><m:mi>x</m:mi><m:mo>-</m:mo><m:mn>5</m:mn></m:mrow></m:mrow></m:mfenced></m:mrow></m:mrow><m:mrow><m:mn>2</m:mn></m:mrow></m:msup><m:mo>+</m:mo><m:msup><m:mrow><m:mrow><m:mfenced open='(' close=')'><m:mrow><m:mrow><m:mi>y</m:mi><m:mo>+</m:mo><m:mn>3</m:mn></m:mrow></m:mrow></m:mfenced></m:mrow></m:mrow><m:mrow><m:mn>2</m:mn></m:mrow></m:msup><m:mo>=</m:mo><m:mn>9</m:mn></m:mrow></m:math>--> III. <img alt='images' src='https://www.fatskills.com/images2/SAT/eq04092.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:msup><m:mrow><m:mrow><m:mfenced open='(' close=')'><m:mrow><m:mrow><m:mi>x</m:mi><m:mo>-</m:mo><m:mn>5</m:mn></m:mrow></m:mrow></m:mfenced></m:mrow></m:mrow><m:mrow><m:mn>2</m:mn></m:mrow></m:msup><m:mo>+</m:mo><m:msup><m:mrow><m:mrow><m:mfenced open='(' close=')'><m:mrow><m:mrow><m:mi>y</m:mi><m:mo>-</m:mo><m:mn>3</m:mn></m:mrow></m:mrow></m:mfenced></m:mrow></m:mrow><m:mrow><m:mn>2</m:mn></m:mrow></m:msup><m:mo>=</m:mo><m:mn>9</m:mn></m:mrow></m:math>-->