There are three blocks. Lets call them A, B and C. Block A contains a medium black square. Then, we have block B with one medium yellow square and one medium black square in it. The medium yellow square is touching the bottom edge of this block. It is below the medium black square. Finally, to the right of block B we have block C which is above block A. It contains one medium blue square and one medium black square. The medium blue square is below the medium black square.
Which object is below a medium black square? the medium black square that is in block B or the medium black square that is in block A?
the medium black square  that is in block B the medium black square  that is in block A both of them none of them