Simplify the Expression $\left( 3 n ^ { 2 } \right) \cdot \left( - 6 n ^ { 5 } \right)$

Multiple Choice

Simplify the expression. Assume all variables represent nonzero real numbers.
- $\left( 3 n ^ { 2 } \right) \cdot \left( - 6 n ^ { 5 } \right)$

A) $- 3 n ^{10}$
B) $- 3 n ^ { 7 }$
C) $- 18 n ^{10}$
D) $- 18 n ^ { 7 }$