There are three blocks, A, B and C. Block A has one medium yellow square. Then, we have block B which contains a medium blue circle. Block C is above block B and below block A. It contains a small black triangle and one big yellow circle. One big blue circle is also in this block. It is to the left of the big yellow circle. The small black triangle is below and to the left of the big yellow circle.
Which object is below a medium yellow object? the big yellow circle or the big blue circle?
the big yellow circle  the big blue circle  both of them none of them