There are three blocks, A, B and C. Block A has a medium black square. A medium yellow square is also in this block. The medium yellow square is below the medium black square. Then, we have block B with a medium blue square in it. Below block A and above block B there is block C. It has one medium yellow square and a medium black square. The medium yellow square is below the medium black square.
Which object is above a medium square? the medium black square that is in block C or the medium black square that is in block A?
the medium black square  that is in block C the medium black square  that is in block A both of them none of them