We have three blocks. We call them A, B and C. One big blue circle and a small black square are in block A. It also contains one medium black circle. It also contains one medium black triangle. To the left of the medium black triangle there is the big blue circle. It is above the medium black circle which is below, to the left of and touching the medium black triangle. The small black square is touching the right edge of this block. It is above the circle which is below the medium black triangle. Then, there is block B. It contains a medium black circle and a big black square. A big blue square is to the right of and below the medium black circle. Below the big black square there is the medium black circle. Finally, we have block C which is below block B. Block A is to the left of it. It contains one medium blue square.
What is below the big black square? a medium black circle or a triangle?
medium black circle  triangle  both of them none of them