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Math·Geometry and Trigonometry·Circles

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Circle A has equation $(x-7{)}^2+(y+3{)}^2=1$. Circle B is obtained by translating circle A to the right 4 units. Which equation represents circle B?

A

$(x-7{)}^2+(y+7{)}^2=1$

B

$(x-3{)}^2+(y+3{)}^2=1$

C

$(x-11{)}^2+(y+3{)}^2=1$

D

$(x-7{)}^2+(y-1{)}^2=1$