We have three blocks, A, B and C. One medium blue square is in block A. Block B is to the right of block A. It contains one medium black square. Finally, we have block C. It is below block A. 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 a medium yellow square and the medium black square. The medium yellow square is below the medium black 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 B?
the medium black square  that is in block C the medium black square  that is in block B both of them none of them