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