We have three blocks, A, B and C. Block B is to the right of blocks C and A. Block A has a medium black square. Block B has a medium blue square and one medium yellow square. The medium blue square is below the medium yellow square. And block C contains two medium black squares. Below medium black square number two is medium black square number one.
What is to the left of the blue object? a medium black square number two or a medium black square number one?
medium black square  number two medium black square  number one both of them none of them