There are three blocks, A, B and C. There is one big yellow square in block A. Then, we have block B which contains one big blue circle. Below blocks B and A there is block C. It has a big yellow triangle, a medium yellow square and a medium yellow triangle. To the right of the medium yellow triangle there is the big yellow triangle. It is below and touching the medium yellow square.
What is below the big yellow square? a medium yellow square or a big blue circle?
medium yellow square  big blue circle  both of them none of them