We have three blocks, A, B and C. There is a small yellow square in block A. One small black triangle is also in this block. Near to the small black triangle there is the small yellow square. Below block A there is block B. It has one small yellow square. Finally, we have block C. It is above block B. It contains a medium yellow triangle and one small black circle. A medium blue circle is below the small black circle. It is below the medium yellow triangle which is near to the small black circle.
What is below the small black circle? a small yellow square or a medium yellow triangle?
small yellow square  medium yellow triangle  both of them none of them