There are three blocks, A, B and C. Block A contains a medium blue square, one medium black square and a medium yellow square. Below the medium yellow square is the medium black square. The medium blue square is below the medium black square and the medium yellow square. Then, there is block B with a medium yellow square in it. Finally, to the left of block B we have block C. It is below block A. It has one medium black square.
Which object is above a medium black square? the medium yellow square that is in block B or the medium yellow square that is in block A?
the medium yellow square  that is in block B the medium yellow square  that is in block A both of them none of them