There are three blocks. Lets call them A, B and C. A medium yellow square and a medium blue square are in block A. The medium yellow square is below the medium blue square. Above block A is block B. It contains a medium blue square. To the left of block A there is block C. It has one medium yellow square. A medium black square is touching the bottom edge of this block. It is below the medium yellow square.
Which object is above a medium yellow square? the medium blue square which is in block A or the medium blue square that is in block B?
the medium blue square  which is in block A the medium blue square  that is in block B both of them none of them