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