Solve the Equation $\{ 10 \}$ B) $\{ - 10 \}$ C) $\{ - 8 \}$

Solve the equation.
--4x - 20 = -2x - 4

A) $\{ 10 \}$
B) $\{ - 10 \}$
C) $\{ - 8 \}$
D) $\{ 8 \}$