There are three blocks. We call them A, B and C. Block A contains a medium yellow square. A medium black square is touching the bottom edge of this block. It is below the medium yellow square. Block B is to the right of block A. It contains one medium yellow square. Below block A there is block C. It contains a medium yellow square and a medium black square. The medium yellow square is touching the bottom edge of this block. This object is below the 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