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