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