We have three blocks. We call them A, B and C. Block A contains one medium black square. A medium yellow square is below the medium black square. Then, there is block B which has a medium blue square and a medium black square. The medium blue square is below the medium black square. Finally, above block B we have block C. It is to the left of block A. It has one medium yellow square.
Which object is below a medium yellow 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