We have three blocks. We call them A, B and C. Blocks A and C are below B. Block A contains a big yellow square and a small black circle. The big yellow square is below the small black circle. Block B contains one small yellow circle and a medium black triangle. The small yellow circle is to the left of and near to a big black circle. The medium black triangle is to the right of the big black circle. And block C contains one medium yellow circle and a medium blue circle. To the right of the medium blue circle there is the medium yellow circle.
What is above the small black circle? a big yellow square or a big black circle?
big yellow square  big black circle  both of them none of them