Solve Express Any Nonreal Complex Numbers with I Notation $$x ^ { 4 } - 22 x ^ { 2 } + 96 = 0$$

Multiple Choice

Solve. Express any nonreal complex numbers with i notation.
- $$x ^ { 4 } - 22 x ^ { 2 } + 96 = 0$$

A) $x = 4 , \sqrt { 6 }$
B) $x = 16,6$
C) $x = \pm 4 , \pm \sqrt { 6 }$
D) $x = \pm 4 , \pm i \sqrt { 6 }$