Simplify the Expression $$\left( x ^ { 5 } \right) ^ { 4 } \left( x ^ { 3 } \right) ^ { 3 }$$

Multiple Choice

Simplify the expression. $$\left( x ^ { 5 } \right) ^ { 4 } \left( x ^ { 3 } \right) ^ { 3 }$$

A) $x ^ { 15 }$
B) $x ^ { 29 }$
C) $\quad x ^ { 6 }$