There are three blocks. Lets call them A, B and C. Block C is above blocks A and B. Block A contains one medium blue square, a medium black square and one medium yellow square. The medium black square is below the medium yellow square. The medium blue square is below the medium black square and the medium yellow square. Block B contains a medium yellow square. And block C has two medium yellow squares. Medium yellow square number one is below medium yellow square number two.
Which object is above a medium square? the medium yellow square which is in block B or the medium yellow square which is in block A?
the medium yellow square  which is in block B the medium yellow square  which is in block A both of them none of them