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