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