There are three blocks, A, B and C. A medium blue square is in block A. Block B is to the right of block A. It has a medium blue square. One medium black square is also in this block. The medium black square is below the medium blue square. Above block B there is block C which contains one medium blue square. A medium black square is below the medium blue square.
Which object is above a medium black square? the medium blue square that is in block B or the medium blue square that is in block A?
the medium blue square  that is in block B the medium blue square  that is in block A both of them none of them