The friends take a few minutes to discuss their ideas. Which of Amy's comments with respect to a charged particle moving in a magnetic field is false? "If the magnetic force is always perpendicular to the velocity, the path of the particle is a straight line." "The magnetic force acting on a charged particle moving in a magnetic field is perpendicular to the particle's velocity." "The magnitude FB of the magnetic force exerted on the particle is proportional to the magnitude of the charge q and to the speed v of the particle." "The work done by the magnetic force on the particle is zero