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