There are three blocks, A, B and C. Block A contains a big blue circle. Below block A there is block B with a big yellow square and one small yellow triangle in it. One small black circle is also touching the top edge of this block. It is above and to the right of the small yellow triangle. Near to and to the right of the small yellow triangle there is the big yellow square. To the right of block A there is block C with one medium yellow circle in it.
What is below the big circle? a medium yellow circle or a small yellow triangle?
medium yellow circle  small yellow triangle  both of them none of them