$($Relativity $-$ Rest Energy$)$ What is the rest energy of a proton $($in joules$)?$

a$)E=4\mathrm{.}5{10}^{-19}J$

b$)E=2\mathrm{.}7{10}^{-22}J$

c$)E=8\mathrm{.}2{10}^{-14}J$

d$)E=1\mathrm{.}5{10}^{-10}J$

e$)$ None of the above