There is a relation between figure A and figure B. Pick the answer figure that bears the same relation to figure C.

B is A turned through half a turn $(180^{\circ })$: the kite now points the opposite way, the dot has gone from the top-right to the bottom-left corner and the small circle from the bottom-left to the top-right. Half a turn of C puts the triangle at the bottom-right pointing left, the dome upside down at the upper-left and the dot at the top-right: (c). (a) and (b) are mirror images, which look different here, and (d) is only a quarter turn.