For A $\neq$ 0, the Polar Curve $r = a ( 1 - \sin \theta )$

Multiple Choice

For a $\neq$ 0, the polar curve $r = a ( 1 - \sin \theta )$ is a

A) Circle
B) Cardioid
C) Limaçon with inner loop
D) Dimpled limaçon
E) Convex limaçon