There are two blocks, A and B. Block A is below B. Block A has one medium yellow square and a medium blue square. The medium yellow square is touching the bottom edge of this block. It is below the medium blue square. Block B contains a medium black square, a medium blue square and a medium yellow square. The medium black square is below the medium blue square and the medium yellow square. The medium blue square is below the medium yellow square.
Which object is below a medium square? the medium yellow square that is in block B or the thing that is touching the bottom edge of a block?
the medium yellow square  that is in block B the thing that is touching the bottom edge of a block  both of them none of them