An Electron with a Kinetic Energy of 2 MeV Is $\times$

Multiple Choice

An electron with a kinetic energy of 2 MeV is produced in a betatron.Its momentum is approximately

A) 8.2 $\times$ 10^-3 kg · m/s
B) 1.31 $\times$ 10^-27 kg · m/s
C) 7.63 $\times$ 10^-22 kg · m/s
D) 1.31 $\times$ 10^-21 kg · m/s
E) 7.63 $\times$ 10^-25 kg · m/s