Select the Graph of the Polar Equation Using Symmetry,zeros,maximum R-Values,and $$r = \cos 3 \theta$$

Multiple Choice

Select the graph of the polar equation using symmetry,zeros,maximum r-values,and any other additional points.​ $$r = \cos 3 \theta$$ ​

A) Symmetric with respect to the polar axis $| r | = 1$ when $\theta = 0 , \frac { \pi } { 3 } , \frac { 2 \pi } { 3 } , \pi$
$r = 0$ when $\theta = \frac { \pi } { 6 } , \frac { \pi } { 2 } , \frac { 5 \pi } { 6 }$ ​
B) Symmetric with respect to the polar axis $| r | = 1$ when $\theta = 0 , \frac { \pi } { 3 } , \frac { 2 \pi } { 3 } , \pi$
$r = 0$ when $\theta = \frac { \pi } { 6 } , \frac { \pi } { 2 } , \frac { 5 \pi } { 6 }$ ​
C) Symmetric with respect to the polar axis $| r | = 1$ when $\theta = 0 , \frac { \pi } { 3 } , \frac { 2 \pi } { 3 } , \pi$
$r = 0$ when $\theta = \frac { \pi } { 6 } , \frac { \pi } { 2 } , \frac { 5 \pi } { 6 }$ ​
D) Symmetric with respect to the polar axis $| r | = 1$ when $\theta = 0 , \frac { \pi } { 3 } , \frac { 2 \pi } { 3 } , \pi$
$r = 0$ when $\theta = \frac { \pi } { 6 } , \frac { \pi } { 2 } , \frac { 5 \pi } { 6 }$ ​
E) Symmetric with respect to the polar axis $| r | = 1$ when $\theta = 0 , \frac { \pi } { 3 } , \frac { 2 \pi } { 3 } , \pi$
$r = 0$ when $\theta = \frac { \pi } { 6 } , \frac { \pi } { 2 } , \frac { 5 \pi } { 6 }$ ​