There are three blocks, A, B and C. Block A contains a big yellow circle. This block also has one medium black triangle. The medium black triangle is to the left of and near to the big yellow circle. Above block A there is block B. It contains a small black circle and one medium black square. To the right of the medium black square is the small black circle. Finally, we have block C which is to the right of block A. It has one big blue square.
Which object is above a medium black object? the big blue square or the medium black square?
the big blue square  the medium black square  both of them none of them