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 black square that is in block C or the medium black square that is in block A?
the medium black square  that is in block C the medium black square  that is in block A both of them none of them