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