There are two blocks, A and B. One medium blue square is in block A. Below the medium blue square is a medium yellow square. Below block A we have block B with two medium black squares in it. Medium black square number one is touching the bottom edge of this block. A medium yellow square is also in this block. It is below medium black square number two. Below the square which is below medium black square number two there is medium black square number one. It is below medium black square number two.
What is above the thing that is touching the bottom edge of a block? a medium blue square or a medium yellow square?
medium blue square  medium yellow square  both of them none of them