We have three blocks, A, B and C. Block A contains one medium blue square and one medium black square. The medium blue square is below the medium black square. Then, we have block B which has a medium black square. Finally, we have block C. It is below both blocks B and A. It has one medium blue square and a medium black square. The medium blue square is below the medium black square.
Which object is above a medium blue square? the medium black square that is in block C or the medium black square that is in block B?
the medium black square  that is in block C the medium black square  that is in block B both of them none of them