Factor Out the Largest Possible Common Factor $$6 x ^ { 6 } - 8 x ^ { 3 } - 15 x ^ { 3 } + 20$$

Multiple Choice

Factor out the largest possible common factor.
- $$6 x ^ { 6 } - 8 x ^ { 3 } - 15 x ^ { 3 } + 20$$

A) $\left( 2 x ^ { 6 } - 5 \right) ( 3 x - 4 )$
B) $\left( 2 x ^ { 3 } - 5 \right) \left( 3 x ^ { 3 } - 4 \right)$
C) $\left( 6 x ^ { 3 } + 5 \right) \left( x ^ { 3 } + 4 \right)$
D) $\left( 2 x ^ { 3 } + 5 \right) \left( 3 x ^ { 3 } + 4 \right)$