Solve by Extracting Square Roots $$x ^ { 2 } = 16$$

Multiple Choice

Solve by extracting square roots.
- $$x ^ { 2 } = 16$$

A) $\{ 4 \}$
B) $\{ 5 , - 5 \}$
C) $\{ 4 , - 4 \}$
D) $\{ 8 \}$