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