There are three blocks. We call them A, B and C. There are a medium black circle, one medium blue square and one small blue square in block A. The medium black circle is below the medium blue square and the small blue square. The medium blue square is to the right of the small blue square. Block B is below block A. It has a small blue circle. Finally, there is block C. It is below block A. It has a small black triangle and a big black triangle. The small black triangle is to the right of the big black triangle. The big black triangle is touching the bottom edge of this block.
Which object is above a big object? the medium blue square or the small black triangle?
the medium blue square  the small black triangle  both of them none of them