There are two blocks. We call them A and B. One medium yellow square is in block A. The medium yellow square is touching the bottom edge of this block. Below a medium black square there is the medium yellow square. Block B is below block A. It contains two medium black squares. It also contains one medium blue square. There is also a medium yellow square in this block. Below medium black square number two , the medium blue square and the medium yellow square there is medium black square number one. The medium blue square is below the medium yellow square and medium black square number two.
What is below the shape that is touching the bottom edge of a block? 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