The Letters X and Y Represent Rectangular Coordinates $$x ^ { 2 } = 4 y$$

Multiple Choice

The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, θ) .
- $$x ^ { 2 } = 4 y$$

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