We have three blocks. We call them A, B and C. There is a medium blue square in block A. The medium blue square is below a medium yellow square. Then, we have block B which contains one medium black square and one medium yellow square. The medium black square is below the medium yellow square. Finally, we have block C. It is below block B. Block A is to the right of it. It contains one medium black square.
Which object is to the right of a medium black square? the medium yellow square that is in block B or the medium yellow square that is in block A?
the medium yellow square  that is in block B the medium yellow square  that is in block A both of them none of them