Let , with , where and are real-valued. Let denote the ball of radius centered at . Which of the following is true?

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Let <br><img src='https://www.fatskills.com/images2/GradExams/C18A97B4-D7C6-44CC-9267-7690695883B1.png' height='18' width='89'/>, with <br><img src='https://www.fatskills.com/images2/GradExams/AEC3E290-5A2D-424C-ACFB-2EF24805F405.png' height='18' width='88'/>, where <br><img src='https://www.fatskills.com/images2/GradExams/91E49829-8BF4-4C5E-91CC-ED131E319D69.png' height='10' width='11'/> and <br><img src='https://www.fatskills.com/images2/GradExams/FC189493-A4E0-44E5-9887-8DF7AE4C5E3A.png' height='10' width='9'/> are real-valued. Let <br><img src='https://www.fatskills.com/images2/GradExams/46794D5F-CF8C-4304-B98F-A943690888F5.png' height='20' width='52'/> denote the ball of radius <br><img src='https://www.fatskills.com/images2/GradExams/B3B5F75D-4DA4-456D-A05B-F5323BF61473.png' height='10' width='9'/> centered at <br><img src='https://www.fatskills.com/images2/GradExams/FE1BFD63-529A-4F59-B2CF-5D18E4D29B60.png' height='18' width='55'/>. Which of the following is true?