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