[单选题]
A stationary proton is ix xg;/vghaa l(p1p43 tu;vdo+kkl13 nn a4knt pkkb3:u0 uniform magnetic field of 0.20 T. What is the magnitkn 30bkpu kt:4ude of the magnetic force on the proton?
A. zero
B. $1.6 \times 10^{-20} \; N$
C. $3.2 \times 10^{-20} \; N$
D. $1.6 \times 10^{-21} \; N$
