Which of the following explains why a magnetic field does no work on a moving charged particle?( )

A、Themagneticforcedependsonthedirectionofmotionoftheparticle.
B、Themagneticforceisalwaysperpendiculartothedirectionofmotion.
C、Thereisalwaysanelectricfieldthatcancelstheworkdonebythemagneticfield.
D、Themagneticforcedependsonthespeedoftheparticle.
E、Themagneticforceisconservative.