There are three blocks. We call them A, B and C. Block A has one medium blue square. Then, there is block B which has a medium black square. Finally, we have block C. It is below block A and block B is to the left of it. It contains two medium black squares. Medium black square number one is below a medium yellow square and medium black square number two. Below medium black square number two there is the medium yellow square.
Which object is to the right of a medium black square? the medium yellow square or the medium blue square?
the medium yellow square  the medium blue square  both of them none of them