We have three blocks, A, B and C. Block A contains one medium black square and one medium blue square. Below the medium blue square there is the medium black square. This block also contains one medium yellow square. The medium yellow square is below the black object which is below the medium blue square. This object is below the medium blue square. To the left of block A we have 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. It is below the medium yellow square. Below block B there is block C. It contains one medium black square.
Which object is above a medium yellow square? the medium black square that is in block C or the medium black square which is in block A?
the medium black square  that is in block C the medium black square  which is in block A both of them none of them