We have three blocks. Lets call them A, B and C. Block A is above C. Block C is above B. Block A contains a medium yellow square. Block B contains one medium yellow square and one medium black square. One medium blue square is also in this block. The medium black square is below the medium blue square. The medium yellow square is below the medium blue square and the medium black square. And block C has one medium blue square.
Which object is above a medium square? the medium blue square that is in block B or the medium blue square that is in block C?
the medium blue square  that is in block B the medium blue square  that is in block C both of them none of them