A cylindrical can holds three equal-sized balls perfectly. Which is larger, the can's height or the can's circumference?

Height
Circumference
Impossible to tell
They are equal

My choice would be "Impossible to tell" because I could envision them (1) in a very flat can that is only as tall as the balls are round, or (2) in a very tall can that is only as round as the balls are round. Is my logic correct?
Or am I not considering something?

Your logic is not correct. Do not assume the balls are squashed or spaced. Compare the circumference of the can to 6R.