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