Find an Equivalent Equation in Rectangular Coordinates $$r ( 1 - 2 \cos \theta ) = 1$$

Multiple Choice

Find an equivalent equation in rectangular coordinates.
- $$r ( 1 - 2 \cos \theta ) = 1$$

A) $x ^ { 2 } + y ^ { 2 } = 2 + x$
B) $\sqrt { x ^ { 2 } + y ^ { 2 } } = 1 + 2 x$
C) $\sqrt { x ^ { 2 } + y ^ { 2 } } = 2 + x$
D) $x ^ { 2 } + y ^ { 2 } = 1 + 2 x$