If Protons Are Accelerated from Rest in a Van De $\times$

If protons are accelerated from rest in a Van de Graff accelerator through a potential difference of 1.00 MV,what is their resulting speed?

A) 3.67 $\times$ 10⁸ m/s
B) 6.25 $\times$ 10⁷ m/s
C) 9.79 $\times$ 10⁶ m/s
D) 1.38 $\times$ 10⁷ m/s
E) 6.92 $\times$ 10⁶ m/s