Solve by Extracting Square Roots $x ^ { 2 } - 12 x$

Multiple Choice

Solve by extracting square roots.
- $x ^ { 2 } - 12 x$

A) $0 ; ( x - 6 ) ^ { 2 }$
B) $36 ; ( x + 6 ) ^ { 2 }$
C) $36 ; ( x - 6 ) ^ { 2 }$
D) $36 ; ( x - 12 )$