Simplify the Expression $\frac { x ^ { ( 7 a - 2 ) } } { x ^ { ( 3 a - 3 ) } }$

Multiple Choice

Simplify the expression. Assume that all variables represent nonzero integers.
- $\frac { x ^ { ( 7 a - 2 ) } } { x ^ { ( 3 a - 3 ) } }$

A) $x ^ { ( 4 a + 1 ) }$
B) $x ^ { ( 4 a - 5 ) }$
C) $x ^ { ( - 4 a - 1 ) }$
D) $x^{ ( 10 a - 5 ) }$