Simplify the Expression $\frac { 18 ^ { 12 } } { 18 ^ { 5 } }$

Multiple Choice

Simplify the expression. Write your answer with positive exponents only.
- $\frac { 18 ^ { 12 } } { 18 ^ { 5 } }$

A) $18 ^ { 17 }$
B) $18 ^ { 12 / 5 }$
C) $18 ^ { 7 }$
D) $18 ^ { 12 } - 18 ^ { 5 }$