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