There are three blocks. Lets call them A, B and C. Two medium blue squares are in block A. Medium blue square number one is below medium blue square number two. Block B is to the right of block A. It has a medium black square. Finally, there is block C. It is to the left of block B. It has one medium black square and a medium yellow square. The medium black square is touching the bottom edge of this block. It is below the medium yellow square.
Which object is to the left of a medium black square? medium blue square number two or medium blue square number one?
medium blue square  number two medium blue square  number one both of them none of them