Solve the Equation of Quadratic Form $x - 4 \sqrt { x } - 12 = 0$

Multiple Choice

Solve the equation of quadratic form. $x - 4 \sqrt { x } - 12 = 0$

A) $x = - 4 ; x = 36$
B) $x = - 2 ; x = 6$
C) x=36
D) $x = 2 ; x = - 6$
E) $x = \sqrt { 2 } i ; x = \sqrt { 6 }$