Rationalize the Denominator and Simplify $\frac { 7 } { \sqrt [ 4 ] { a ^ { 3 } } }$

Multiple Choice

Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
- $\frac { 7 } { \sqrt [ 4 ] { a ^ { 3 } } }$

A) $\frac { 7 \sqrt [ 4 ] { a } } { a }$
B) $7 \sqrt [ 4 ] { a }$
C) $\frac { 7 \sqrt [ 4 ] { a ^ { 3 } } } { a }$
D) $\frac { 7 \sqrt [ 4 ] { a ^ { 2 } } } { a }$