Identify the Graph of the Polar Equation $r=a+b \cos \theta \text {, where } 1 \leq \frac{a}{b} \leq 2 \text {. }$

Multiple Choice

Identify the graph of the polar equation $r=a+b \cos \theta \text {, where } 1 \leq \frac{a}{b} \leq 2 \text {. }$

A) cardioid
B) rose curve
C) limaçon with inner loop
D) dimpled limaçon
E) convex limaçon