We have three blocks, A, B and C. Block B is to the left of block C and below block A. Block A 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. Block B contains one medium black square, a medium blue square and one medium yellow square. The medium black square is touching the bottom edge of this block. The medium blue square is below the medium yellow square. The medium black square is below the medium yellow square and the medium blue square. Block C has one medium yellow square.
Which object is above a medium black square? the medium yellow square that is in block B or the medium yellow square that is in block C?
the medium yellow square  that is in block B the medium yellow square  that is in block C both of them none of them