3. Square RSTU shown above is rotated in a plane about its center in a clockwise direction the minimum number of degrees necessary for T to be in the position where S is now shown. The number of degrees through which RSTU is rotated is
(A) 135 degrees
(B) 180 degrees
(C) 225 degrees
(D) 270 degrees
(E) 315 degrees
Answer: D
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