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