There are three blocks. We call them A, B and C. Block C is above and B is below A. Block A contains a big yellow triangle. Block B contains one small black triangle. And block C has a medium black circle and one small yellow square. A big yellow square is also in this block. Below and to the right of the small yellow square there is the medium black circle. The big yellow square is below the small yellow square.
What is above the small black triangle? a small yellow square or a big yellow triangle?
small yellow square  big yellow triangle  both of them none of them