So once again, this right over here is false. Now, we could write B is a subset of C, or we could even write that B is a strict subset of C. Now, we could also reverse the way we write this, and then we're really just talking about supersets. So we could reverse this notation, and we could say that A is a superset of B. And this is just another way of saying that B is a subset of A. But the way you could think about this is A contains every element that is in B. And it might contain more. It might contain exactly every element.