Factor the Polynomial by Substitution $$12 z ^ { 4 } - 7 z ^ { 2 } - 12$$

Multiple Choice

Factor the polynomial by substitution.
- $$12 z ^ { 4 } - 7 z ^ { 2 } - 12$$

A) $\left( 4 z ^ { 4 } + 3 \right) ( 3 z - 4 )$
B) $\left( 3 z ^ { 4 } + 4 \right) ( 4 z - 3 )$
C) $\left( 3 z ^ { 2 } + 4 \right) \left( 4 z ^ { 2 } - 3 \right)$
D) $\left( 4 z ^ { 2 } + 3 \right) \left( 3 z ^ { 2 } - 4 \right)$