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