Simplify the Expression $$x ^ { 11 } \cdot x ^ { 7 }$$

Multiple Choice

Simplify the expression. Assume all variables represent nonzero real numbers.
- $$x ^ { 11 } \cdot x ^ { 7 }$$

A) $( 2 x ) ^ { 77 }$
B) $( 2 x ) ^ { 18 }$
C) $x ^ { 18 }$
D) $x ^ { 77 }$