We have three blocks. Lets call them A, B and C. Block B is below C and block C is below A. Block A has two medium black squares. This block also contains one medium blue square. Below medium black square number two and medium black square number one there is the medium blue square. Below medium black square number two there is medium black square number one. Block B has one medium black square. And block C contains one medium blue square. There is also one medium yellow square in this block. The medium yellow square is below the medium blue square.
What is above the object that is touching the bottom edge of a block? a medium black square or a medium yellow square?
medium black square  medium yellow square  both of them none of them