There are three blocks, A, B and C. Block A has one medium yellow square. Block B is to the left of block A. It has one medium black square and a medium yellow square. The medium black square is below the medium yellow square. Above block A there is block C with one medium black square and one medium yellow square in it. The medium black square is touching the bottom edge of this block. This object is below the medium yellow square.
Which object is above a medium yellow 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