There are three blocks, A, B and C. Block A has a medium yellow square. A medium black square is touching the bottom edge of this block. It is below the medium yellow square. Block B is to the left of block A. It contains a medium yellow square and one medium black square. The medium yellow square is touching the bottom edge of this block. It is below the medium black square. Finally, we have block C to the left of block A. It contains two medium blue squares. Medium blue square number one is below medium blue square number two.
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