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