Solve the Equation by Using the Square Root Property $$x ^ { 2 } = - 25$$

Solve the equation by using the square root property. Express any complex numbers using i notation.
- $$x ^ { 2 } = - 25$$

A) $x = \pm 5 i$
B) $x = 5 i$
C) $x = - 12.5$
D) $x = \pm 6 \mathrm { i }$