The Rest Mass of an Electron Is 9 $\times$ 10^-31 Kg $\times$

Multiple Choice

The rest mass of an electron is 9.11 $\times$ 10^-31 kg.From this information one can conclude that the rest energy of an electron is

A) 8.20 $\times$ 10 ^-14 MeV
B) 0.512 MeV
C) 2.73 $\times$ 10 ^-22 J
D) 0.00171 MeV
E) 0.171 MeV