We have three blocks, A, B and C. Block A contains one medium black square. Then, there is block B. It contains a medium yellow square. Finally, we have block C below block A. Block B is to the left of it. It has two medium yellow squares. Below medium yellow square number two is medium yellow square number one. A medium blue square is touching the bottom edge of this block. It is below medium yellow square number two and medium yellow square number one.
What is above the blue shape? a medium yellow square or a medium black square?
medium yellow square  medium black square  both of them none of them