Find All the Zeros of the Function and Write the Polynomial

Multiple Choice

Find all the zeros of the function and write the polynomial as a product of linear factors. $x ^ { 4 } + 32 x ^ { 2 } + 256$

A) $4 i , 4 i ; ( x + 4 i ) ( x + 4 i ) ( x + 4 i ) ( x + 4 i )$
B) $\pm 4 , \pm 4 i ; ( x + 4 ) ( x - 4 ) ( x + 4 i ) ( x - 4 i )$
C) $\pm 4 i , \pm 4 ; ( x + 4 i ) ( x - 4 i ) ( x + 4 ) ( x - 4 )$
D) $- 4 i , - 4 i ; ( x - 4 i ) ( x - 4 i ) ( x - 4 i ) ( x - 4 i )$
E) $\pm 4 i , \pm 4 i ; ( x + 4 i ) ( x - 4 i ) ( x + 4 i ) ( x - 4 i )$