Determine the Symmetries of the Curve $$r ^ { 2 } = - 3 \cos 3 \theta$$

Multiple Choice

Determine the symmetries of the curve.
- $$r ^ { 2 } = - 3 \cos 3 \theta$$

A) Origin only
B) No symmetry
C) x-axis, y-axis, origin
D) x-axis only