Simplify Assume That Variables in the Exponent Represent Nonzero Integers $\frac { x ^ { 9 t - 7 } } { x ^ { 2 t - 5 } }$

Multiple Choice

Simplify. Assume that variables in the exponent represent nonzero integers and that all other variables are not 0.
- $\frac { x ^ { 9 t - 7 } } { x ^ { 2 t - 5 } }$

A) $x ^ { - 7 t } + 2$
B) $x ^ { 11 t } - 12$
C) $x ^ { 7 t - 2 }$
D) $x ^ { 7 t - 12 }$