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