We have three blocks. Lets call them A, B and C. Block A has one medium yellow square. Then, we have block B. It contains a medium yellow square. Block C is above both blocks B and A. It contains two medium black squares. Medium black square number one is below a medium yellow square and medium black square number two. Medium black square number two is below the medium yellow square.
Which object is above a medium yellow square? the medium yellow square that is in block B or the medium yellow square which is in block C?
the medium yellow square  that is in block B the medium yellow square  which is in block C both of them none of them