Find an Equivalent Equation in Polar Coordinates $$x ^ { 2 } - y ^ { 2 } = 4$$

Multiple Choice

Find an equivalent equation in polar coordinates.
- $$x ^ { 2 } - y ^ { 2 } = 4$$

A) $r \cos 2 \theta = 4$
B) $\cos ^ { 2 } \theta - \sin ^ { 2 } \theta = 4$
C) $\cos ^ { 2 } \theta - \sin ^ { 2 } \theta = 4 r$
D) $r ^ { 2 } \cos 2 \theta = 4$