There are three blocks, A, B and C. Block A has two medium black squares. Medium black square number two is below a medium yellow square. Below the medium yellow square and medium black square number two there is medium black square number one. Then, there is block B with one medium black square and a medium blue square in it. The medium black square is touching the bottom edge of this block. It is below the medium blue square. Finally, below block B we have block C. It is to the left of block A. It has one medium black square.
Which object is above a medium black square? the blue object or the medium yellow square?
the blue object the medium yellow square  both of them none of them