There are three blocks. Lets call them A, B and C. Block A is below C and block B is below A. Block A contains two medium blue squares. Below medium blue square number two there is medium blue square number one. Block B contains a medium yellow square. And block C contains one medium yellow square. This block also has one medium black square. The medium yellow square is touching the bottom edge of this block. This shape is below the medium black square.
What is below the shape which 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