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