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