Solve the Equation in the Real Number System $x ^ { 3 } + 5 x ^ { 2 } + 2 x - 8 = 0$

Multiple Choice

Solve the equation in the real number system.
- $x ^ { 3 } + 5 x ^ { 2 } + 2 x - 8 = 0$

A) {2, 4}
B) {-4, -2, 1}
C) {-4, -2}
D) {-1, 2, 4}