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