Which figure has rotational symmetry?

Question

An image shows four figures. Figure 1 is a crudely drawn spiral. Figure 2 is an obtuse scalene triangle. Figure 3 is a circle with an X drawn through its center. Figure 4 is a non-isosceles trapezoid.

A. figure 1
B. figure 2
C. figure 3
D. figure 4

Answer 1

C. figure 3 (the circle with an X drawn through its center has rotational symmetry)