Factor
- $72 x^{9} y 9-24 x^{6} y^{4}-84 x^{2} y^{2}$ A) $12\left(6 x^{9} y^{9}-2 x^{6} y^{4}-7 x^{2} y^{2}\right)$

Multiple Choice

Factor.
- $72 x^{9} y 9-24 x^{6} y^{4}-84 x^{2} y^{2}$

A) $12\left(6 x^{9} y^{9}-2 x^{6} y^{4}-7 x^{2} y^{2}\right)$
B) No common factor
C) $12 x^{2}\left(6 x^{7} y^{9}-2 x^{4} y^{4}-7 y^{2}\right)$
D) $12 x^{2} y^{2}\left(6 x^{7} y^{7}-2 x^{4} y^{2}-7\right)$