There are three blocks, A, B and C. There are a medium yellow square and a medium black square in block A. Below the medium black square is the medium yellow square. Then, we have block B which contains a medium blue square. Finally, below block A we have block C which is below block B. It contains a medium blue square and one medium black square. The medium blue square is touching the bottom edge of this block. This shape is below the medium black square.
Which object is above a medium blue square? the medium black square which is in block C or the medium black square that is in block A?
the medium black square  which is in block C the medium black square  that is in block A both of them none of them