There are three blocks. We call them A, B and C. Block A is below block B and to the left of block C. Block A contains a small black circle. Block B has one big yellow triangle. Block C has one small blue circle, one medium black square and a big blue square. To the left of a medium yellow square is the small blue circle. The medium yellow square is touching the right edge of this block. The medium black square is touching the right edge of this block. The big blue square is touching the bottom edge of this block. There is also a small yellow circle in this block. To the right of the big blue square there is the medium black square. Above the big blue square is the small blue circle. It is below the small yellow circle. It is near to the square which is to the right of the big blue square.
What is below the small yellow circle? a medium yellow square or a small blue circle?
medium yellow square  small blue circle  both of them none of them