There are two blocks, A and B. Block A is above B. Block A has a big blue square, a medium black triangle and one small black circle. The big blue square is to the right of the medium black triangle which is below the small black circle. It is below the small black circle. Block B contains one small yellow triangle, a big blue circle and one medium yellow circle. The small yellow triangle is to the left of the big blue circle and the medium yellow circle.
What is below the medium black triangle? a big blue square or a medium yellow circle?
big blue square  medium yellow circle  both of them none of them