We have three blocks, A, B and C. There is one medium black square in block A. Below block A is block B which has a medium blue square and one medium yellow square. Below the medium yellow square there is the medium blue square. To the right of block A there is block C which contains a medium black square and a medium yellow square. The medium black square is below the medium yellow square.
Which object is below a medium black square? the medium yellow square that is in block B or the medium yellow square which is in block C?
the medium yellow square  that is in block B the medium yellow square  which is in block C both of them none of them