We have three blocks, A, B and C. Block A is to the left of C. Block C is below B. Block A has a big black triangle. Block B contains one big blue circle. And block C contains one medium black square, one small yellow triangle and a big black circle. The medium black square is below the big black circle and a big yellow circle. The small yellow triangle is below the big black circle. The big yellow circle is to the right of the big black circle.
Which object is below a big circle? the small triangle or the big yellow circle?
the small triangle  the big yellow circle  both of them none of them