Solve the Equation in the Real Number System $x ^ { 3 } + 3 x ^ { 2 } - 8 x + 10 = 0$

Solve the equation in the real number system.
- $x ^ { 3 } + 3 x ^ { 2 } - 8 x + 10 = 0$

A) {1}
B) {5}
C) {-5, 5}
D) {-5}