There are three blocks, A, B and C. There are one medium black triangle, a small yellow square and one medium black square in block A. Above the small yellow square and the medium black square there is the medium black triangle. The medium black square is touching the bottom edge of this block. Then, there is block B which has a big black circle. Finally, we have block C which is below block A and block B is to the left of it. It has a medium blue triangle.
Which object is above a medium triangle? the big black circle or the small yellow square?
the big black circle  the small yellow square  both of them none of them