We have three blocks, A, B and C. Block A is to the left of and C is above B. Block A has one medium black square. Block B contains two medium yellow squares. A medium blue square is touching the bottom edge of this block. Below medium yellow square number two there is medium yellow square number one. The medium blue square is below medium yellow square number one and medium yellow square number two. And block C contains a medium black square.
Which object is below a medium black square? medium yellow square number one or medium yellow square number two?
medium yellow square  number one medium yellow square  number two both of them none of them