There are three blocks, A, B and C. There is a big yellow square in block A. Then, we have block B. It contains a medium yellow square, a medium yellow triangle and one small black square. Near to and below the small black square is the medium yellow square. To the left of the small black square there is the medium yellow triangle. Block C is to the right of block A and above block B. It has one small yellow triangle.
Which object is below a small yellow triangle? the medium yellow triangle or the big yellow square?
the medium yellow triangle  the big yellow square  both of them none of them