We have three blocks. We call them A, B and C. Blocks A and B are above C. Block A contains one medium yellow square and one medium blue square. The medium yellow square is below the medium blue square. Block B contains one medium yellow square and one medium black square. Below the medium black square is the medium yellow square. Block C contains one medium yellow square.
Which object is above a medium yellow square? the medium blue square or the black shape?
the medium blue square  the black shape both of them none of them