[单选题]
A proton, initially aa*l lij4 xj.0r()k4yj7wcltt tie )vz ,put11d k6qa3r rest, is accelerated through an electric potential difference of 500 V. What is the kinetic )pv e6 rui1a1z3d,tkq energy of the proton?
A. $500 \; J$
B. $8.0 \times 10^{-17} \; J$
C. $1.6 \times 10^{-19} \; J$
D. zero
