There are three blocks, A, B and C. There are two medium blue squares in block A. One medium yellow square is also touching the bottom edge of this block. Below medium blue square number two is the medium yellow square. Medium blue square number one is below medium blue square number two. Below medium blue square number one there is the medium yellow square. Block B is to the right of block A. It contains a medium black square. Finally, there is block C. It is to the left of block B. It contains one medium yellow square.
Which object is to the left of a black object? 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