Amy sets the charge to 1e, the mass to 1me, the magnetic field to 0.5 T, and varies the speed. What can Safiya say she observes with respect to the path of the charged particle? "As the speed increases, the radius decreases, then increases, then finally stays constant." "As the speed increases, the radius first increases, then decreases." "As the speed increases, the radius increases." "As the speed increases, the radius stays constant