Solve the Equation in the Real Number System $$x ^ { 4 } - 3 x ^ { 3 } + 5 x ^ { 2 } - x - 10 = 0$$

Multiple Choice

Solve the equation in the real number system.
- $$x ^ { 4 } - 3 x ^ { 3 } + 5 x ^ { 2 } - x - 10 = 0$$

A) $\{ - 1,2 \}$
B) $\{ 1,2 \}$
C) $\{ - 2,1 \}$
D) $\{ - 1 , - 2 \}$