Identify the Expression as a Polynomial or Not a Polynomial $\frac { 7 } { x ^ { 5 } } + \frac { 4 } { x ^ { 3 } } - 9$

Multiple Choice

Identify the expression as a polynomial or not a polynomial.
- $\frac { 7 } { x ^ { 5 } } + \frac { 4 } { x ^ { 3 } } - 9$

A) Not a polynomial
B) Polynomial