In a certain flower garden, each flower was either (R)ed, (Y)ellow or (B)lue, and all three colors were represented. A statistician once visited the garden and made the observation that whatever three flowers you picked, at least one of them was bound to be (R)ed. A second statistician visited the garden and made the observation that whatever three flowers you picked, at least one was bound to be (Y)ellow.
Two logic students heard about this and got into an argument:
A: "it therefore follows that whatever three flowers you pick, at least one is bound to be (B)lue"
B: "Of course not!"

Which student is right, why?