There are three blocks, A, B and C. There are one medium blue square and a medium black square in block A. The medium blue square is below the medium black square. Above block A is block B which has one medium yellow square. Finally, we have block C. It is above block A. It has a medium yellow square and a medium blue square. Below the medium blue square is the medium yellow square.
Which object is above a black thing? the medium blue square that is in block C or the medium blue square that is in block A?
the medium blue square  that is in block C the medium blue square  that is in block A both of them none of them