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