Solve the Equation for the Indicated Variable $c= \pm \sqrt{\frac{E}{m}}$ For $E$

Multiple Choice

Solve the equation for the indicated variable.
- $c= \pm \sqrt{\frac{E}{m}}$ for $E$

A) $\mathrm{E}= \pm \mathrm{c} \sqrt{\mathrm{m}}$
B) $E= \pm \sqrt{\frac{c}{m}}$
C) $\mathrm{E}=\mathrm{mc}$
D) $E=m c^{2}$