We have three blocks. We call them A, B and C. Block A has a medium black square and one medium yellow square. The medium black square is below the medium yellow square. Block B is to the right of block A. It has a medium black square. Above block A there is block C which contains two medium blue squares. There is also one medium yellow square in this block. The medium yellow square is below medium blue square number two and medium blue square number one. Medium blue square number one is below medium blue square number two.
Which object is above a medium yellow square? medium blue square number one or medium blue square number two?
medium blue square  number one medium blue square  number two both of them none of them