There are three blocks, A, B and C. Block C is above A. Block B is to the left of C. Block A contains a medium yellow circle. Block B contains two big blue circles. This block also has a small blue triangle. Big blue circle number two is touching the bottom edge of this block. The small blue triangle is to the left of and above big blue circle number two. It is below and near to big blue circle number one. Block C contains a big yellow square and a medium black circle. A small yellow square is above and to the left of the medium black circle. The big yellow square is above the medium black circle.
What is below the small yellow square? a medium yellow circle or a big blue circle that is touching the bottom edge of a block?
medium yellow circle  big blue circle  that is touching the bottom edge of a block  both of them none of them