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