There are three blocks, A, B and C. Two medium black squares are in block A. Medium black square number one is below medium black square number two. A medium yellow square is touching the bottom edge of this block. It is below medium black square number two and medium black square number one. Then, there is block B with a medium yellow square and a medium black square in it. Below the medium black square there is the medium yellow square. Finally, above block B we have block C. It is above block A. It contains a medium black square.
Which object is below a medium black square? the medium black square that is in block C or medium black square number one?
the medium black square  that is in block C medium black square  number one both of them none of them