Which of the Following Is an Equation of the Polar $\theta$

Multiple Choice

Which of the following is an equation of the polar graph shown in the figure below?

A) r = 3 - 3cos( $\theta$ )
B) r = 6 cos(2 $\theta$ )
C) r = 3 +3 sin( $\theta$ )
D) r = 3 - 3sin( $\theta$ )
E) r = 3 + 3cos( $\theta$ )