[单选题]
98.10: A charged particle with constant velocity enters a unifo)aoish) xndge;a.u6 , rm magnet;0 vu/f *gyejzic field whose direction is parallel to the par/y*v gze0;ju fticle’s velocity. The particle will
A. speed up.
B. slow down.
C. experience no change in velocity.
D. follow a parabolic arc.
E. follow a circular arc.