Selena Gomez And The Scene – Who Says tab

This is the guitar riff that goes on for the whole song in the background.

This is all downstrokes. I don't know how to tab it, but when you do the chord changes, do a downstroke and then an upstroke quickly. If I have communicated this correctly, this is the riff that is played and that is how to play it.
Please rate this tab: