We have three blocks. We call them A, B and C. There are one big yellow circle and a medium black circle in block A. Below the medium black circle is the big yellow circle. Then, we have block B with one small yellow square in it. It also contains one small black circle. Below and near to the small black circle there is the small yellow square. Finally, we have block C below both blocks A and B. It contains one small black triangle.
What is above the triangle? a small black circle or a medium black circle?
small black circle  medium black circle  both of them none of them