Solve the Equation by Using the Square Root Property $$4 x ^ { 2 } = 60$$

Solve the equation by using the square root property. Express any complex numbers using i notation.
- $$4 x ^ { 2 } = 60$$

A) $x = 16$
B) $x = \pm \sqrt { 15 }$
C) $x = \pm 15$
D) $x = 30$