A proton, an electron and an alpha particle are at rest. Which particle has the smallest magnitude of ratio of charge to mass and which particle has the largest magnitude of ratio of charge to mass?

A proton, an electron and an alpha particle are at rest. Which particle has the smallest magnitude of ratio of charge to mass and which particle has the largest magnitude of ratio of charge to mass?

	Smallest charge to mass ratio	Largest charge to mass ratio
A.	alpha	electron
B.	electron	alpha
C.	electron	proton
D.	proton	electron