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