Simplify the Expression $\frac { a ^ { 1 / 5 } a ^ { 4 / 5 } } { a ^ { 2 / 5 } }$

Multiple Choice

Simplify the expression. $\frac { a ^ { 1 / 5 } a ^ { 4 / 5 } } { a ^ { 2 / 5 } }$
Write all answers without using negative exponents. Assume that all variables represent positive numbers.

A) $\quad a ^ { 3 / 10 }$
B) $a ^ { 7 / 5 }$
C) $\quad a ^ { 3 / 5 }$
D) $\quad a ^ { 5 / 5 }$
E) $\quad a ^ { 3 / 8 }$