[单选题]
A stationary proton iot+6-nk b6 zvq7j .bvks in a uniform magnetic fi* 6ms-arztq* c*4xc ,fxh c3ooeld of 0.20 T. What is the magnitu3x6r*h-cx f,c stzoq ac4 m**ode of the magnetic force on the proton?
A. zero
B. $1.6 \times 10^{-20} \; N$
C. $3.2 \times 10^{-20} \; N$
D. $1.6 \times 10^{-21} \; N$
