Open tunings allow you to play at least one chord without knowing what to do with your left hand. For 3 chord songs, you guys have the song at 33 1/3 figured out how to play it. Now, the trick you can figure out next is what fret to press down on all of the strings at once to play the other two chords.

A) 2 and 4
B) 3 and 5
C) 5 and 7
D) None. It's a 1 chord song in open tuning

Good luck. Winner gets a regular cap partially sawed off.