Use the Square Root Property to Solve the Equation $x ^ { 2 } = 120$

Multiple Choice

Use the square root property to solve the equation.
$x ^ { 2 } = 120$

A) $\{ 60 \}$
B) $\{ 12 \}$
C) $\{ - 2 \sqrt { 30 } , 2 \sqrt { 30 } \}$
D) $\{ 2 \sqrt { 30 } \}$