There are three blocks, A, B and C. One big black square is in block A. Block B is below block A. It contains one big yellow square. There is also a medium yellow circle in this block. The medium yellow circle is to the left of and above the big yellow square. Finally, there is block C below block A. It has one medium yellow circle and a medium yellow triangle. Above and to the right of the medium yellow triangle is the medium yellow circle.
What is below the black shape? a triangle or a big yellow square?
triangle  big yellow square  both of them none of them