Directions :Read the poem given belowand answer the questions that follow byselecting the most appropriate option.I Build Walls I build walls Walls that protect - Wallsthat shield - Walls that say I shall not yield Or revealWho I am or how I feel. I build walls Walls that hide - Walls that cover what's inside - Walls that stare orsmile or look away - Silent lies - Walls that even blockmy eyes From the tears I might have cried. I buildwalls Walls that never let me Truly touch Those Ilove so very much Walls that need to fall Wallsmeant to be fortresses Are prisons after all.What are the walls in this poem made of?