Find Only the Rational Zeros $$f ( x ) = x ^ { 4 } + 25$$

Multiple Choice

Find only the rational zeros.
- $$f ( x ) = x ^ { 4 } + 25$$

A) $\frac { \sqrt { 5 } } { 2 } , - \frac { \sqrt { 5 } } { 2 }$
B) $5 , - 5 , \sqrt { 5 } , - \sqrt { 5 }$
C) 0
D) No rational zeros