There are three blocks, A, B and C. Block A contains two big yellow circles. Big yellow circle number one is to the right of big yellow circle number two. Above block A we have block B with a medium black triangle in it. Below block B there is block C. It contains one small black triangle and a small yellow square. It also contains one medium yellow square. Near to the small yellow square there is the small black triangle. To the left of the medium yellow square there is the small yellow square.. The small black triangle is above the medium yellow square.
What is above the medium yellow square? a small black triangle or a small yellow square?
small black triangle  small yellow square  both of them none of them