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