Solve the Equation by Completing the Square $z^{2}+10 z+4=0$ A) $5 \pm \sqrt{4}$

Multiple Choice

Solve the equation by completing the square.
- $z^{2}+10 z+4=0$

A) $5 \pm \sqrt{4}$
B) $5 \pm \sqrt{21}$
C) $5+\sqrt{21}$
D) $-10+\sqrt{21}$