We have two blocks, A and B. Block A is to the left of B. Block A contains one medium yellow square. There is also one medium black square in this block. Below the medium yellow square is the medium black square. Block B has a medium black square, a medium blue square and one medium yellow square. The medium black square is touching the bottom edge of this block. This shape is below the medium yellow square and the medium blue square. Below the medium yellow square there is the medium blue square.
What is above the thing that is touching the bottom edge of a block? a medium black square or a blue object?
medium black square  blue object both of them none of them