[单选题]
A stationary proton is in a uniform magne or:a6fxv.u 5tcyv8axucr4xa8(e x0p a)5v) stic field of 0.20 T. What is the magnitude of the magnetic force on xacpvxruca)) xe8ayv(4085sthe proton?
A. zero
B. $1.6 \times 10^{-20} \; N$
C. $3.2 \times 10^{-20} \; N$
D. $1.6 \times 10^{-21} \; N$
