We have three blocks, A, B and C. Blocks B and C are to the left of A. Block A contains a medium yellow square. Block B contains two medium black squares. Below medium black square number two there is medium black square number one. Block C contains a medium black square and a medium yellow square. The medium black square is below the medium yellow square.
Which object is to the left of a medium yellow square? medium black square number two or the medium black square that is in block C?
medium black square  number two the medium black square  that is in block C both of them none of them