Atomic Structure Quiz (2) Physics AS Level

The charge-to-mass ratio r of a particle is given by the equation shown.
$r{\text{ }} = {\text{ }}\frac{{charge{\text{ }}on{\text{ }}particle}}{{mass{\text{ }}of{\text{ }}particle}}$
The value of $r$ is determined for an α-particle, a $β^+$ particle and a proton $p$.
Which list shows the particles in order of increasing magnitude of $r$ from left to right?