Find All Rational, Irrational, and Complex Zeros $P ( x ) = x ^ { 4 } - 256$

Multiple Choice

Find all rational, irrational, and complex zeros. $P ( x ) = x ^ { 4 } - 256$

A) $\{ - 4,4 , - 4 i , 4 i \}$
B) $\{ - 4,4 \}$
C) $\{ 4 \}$
D) $\{ - 4 i , 4 i \}$
E) $\{ - 16,16 , - 4 i , 4 i \}$