There are three blocks, A, B and C. There are one big black circle and a small blue triangle in block A. To the right of the small blue triangle is the big black circle. Block B is below block A. It has one small black square and one medium black circle. It also contains a small yellow circle. The small yellow circle is far from, below and to the left of the medium black circle. Finally, there is block C. It is above block B. It has a medium yellow circle.
What is above the small yellow circle? a big thing or a small blue triangle?
big thing small blue triangle  both of them none of them