We have three blocks, A, B and C. A medium black square and a medium blue square are in block A. The medium black square is below the medium blue square. Then, there is block B which has a medium black square and a medium yellow square. The medium black square is touching the bottom edge of this block. This object is below the medium yellow square. Finally, below block B we have block C. It is above block A. It contains a medium blue square.
Which object is above a medium black square? the medium black square that is touching the bottom edge of a block or the medium yellow square?
the medium black square  that is touching the bottom edge of a block  the medium yellow square  both of them none of them