We have three blocks, A, B and C. Block C is above and A is below B. Block A contains one medium blue square and a medium yellow square. The medium blue square is below the medium yellow square. Block B contains two medium blue squares. Medium blue square number one is touching the bottom edge of this block. This object is below medium blue square number two. And block C contains a medium black square.
What is below the black shape? a medium blue square or a yellow object?
medium blue square  yellow object both of them none of them