There are three blocks. We call them A, B and C. Block A has one medium yellow square. Below block A there is block B which has one medium blue square and one medium yellow square. The medium blue square is below the medium yellow square. To the left of block A there is block C which has 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 yellow square? the medium yellow square that is in block C or the medium yellow square that is in block B?
the medium yellow square  that is in block C the medium yellow square  that is in block B both of them none of them