Replace the Polar Equation with an Equivalent Cartesian Equation $$\mathrm { r } ^ { 2 } = 50 \mathrm { r } \cos \theta - 6 \mathrm { r } \sin \theta - 9$$

Multiple Choice

Replace the polar equation with an equivalent Cartesian equation.
- $$\mathrm { r } ^ { 2 } = 50 \mathrm { r } \cos \theta - 6 \mathrm { r } \sin \theta - 9$$

A) $( x - 25 ) ^ { 2 } + ( y + 3 ) ^ { 2 } = 625$
B) $( x + 50 ) ^ { 2 } + ( y - 6 ) ^ { 2 } = 9$
C) $50 x - 6 y = 9$
D) $( x - 25 ) ^ { 2 } + ( y + 3 ) ^ { 2 } = 9$