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