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