I hate to knock Petsmart (after all, my very first Strawberry came from Petsmart!), but it is a shame they don't make more effort to properly ID their birds. With CBs, sexing is easy, telling the difference between species on hens is not.
Looking at the photo, I would say the male is probably young, as he doesn't have much of a cheek patch yet--it should be larger and more defined than it seems. If the others are also young, there is a chance that one that looks like a hen could turn out to be a male--young males look like hens till they have finished their adult molt. And they molt at different ages, even males from the same clutch.
The others do look like RC hens, or young males.

Personally, for the price Petsmart charges, they should be able to at least provide the age, sex, and species of the birds they sell. I realize they buy in huge quantities, and their breeders can't be expected to band every bird, but their suppliers should be required to provide that information. Of course, that would only work if their suppliers were conscientious, and if Petsmart followed through. As long as they can sell birds without doing this, they won't bother.