Solve the Equation $m ^ { 2 } - 4 m - 5 = 0$

Multiple Choice

Solve the equation. $m ^ { 2 } - 4 m - 5 = 0$

A) $\{ 5 , - 1 \}$
B) $\{ 5,1 \}$
C) $\{ - 5 , - 1 \}$
D) none of these