please help ASAP magnetism physics

Question

A charged particle is moving through a constant magnetic field. Does the magnetic field do work on the charged particle?

1. no, because the magnetic force is always perpendicular to the velocity of the particle
2.  no, because the magnetic field is conservative
3. no, because the magnetic field is a vector and work is a scalar quantity
4. no, because the magnetic force is a velocity-dependent force
5. yes, because the force is acting as the particle is moving through some distance

Answer 1

a. The magnetic force is perpendicular to the particle velocity, because

the force is the VECTOR PRODUCT of the velocity and the magnetic field.

And any force perpendicular to velocity does no work, because work is the

DOT PRODUCT of force and distance.

b. The magnetic field is indeed conservative, but that property implies zero work

only for a particle that completes a circle.

c. It is true that work is a scalar and the other quantities are vectors,

but that does not imply zero work.

d. The magnetic force is indeed a velocity-dependent force, but that does not

imply zero work.

e. The force is indeed acting on a moving particle, but work is proportional to

the cosine of the angle between the force and velocity, which in this case is 0.