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