[单选题]
The radius of a typical nuc2t,(gg,jr,x oc d9 agyq.a k;ib 439pi*arfekt +zo*j -nql4 gleus is about $5.0 \times 10^{-15} \; m$. Assuming this to be the uncertainty in the position of a proton in the nucleus, estimate the uncertainty in the proton's energy (in eV).
A. $0.4 \; MeV$
B. $0.6 \; MeV$
C. $0.8 \; MeV$
D. $1.0 \; MeV$
