Subtract the Polynomials and Simplify $\left( - 7 m ^ { 3 } - 6 m - 6 \right)$

Multiple Choice

Subtract the polynomials and simplify.
-Subtract $\left( - 7 m ^ { 3 } - 6 m - 6 \right)$ from $\left( - 5 m ^ { 3 } - 4 m - 8 \right)$ .

A) $- 2 m ^ { 3 } - 2 m + 2$
B) $- 5 m ^ { 3 } + 7 m ^ { 2 } + 2 m - 2$
C) $2 m ^ { 3 } + 2 m - 2$
D) $2 m ^ { 3 } - 10 m - 14$