Solve the Equation by Using Substitution $z ^ { 4 } - 256 = 0$

Multiple Choice

Solve the equation by using substitution. $z ^ { 4 } - 256 = 0$

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