Solve the Equation in the Real Number System $$x ^ { 4 } - 12 x ^ { 2 } - 64 = 0$$

Multiple Choice

Solve the equation in the real number system.
- $$x ^ { 4 } - 12 x ^ { 2 } - 64 = 0$$

A) {-8, 8}
B) {-4, 4}
C) {-2, 2}
D) {-4, -2, 2, 4}