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