There are three blocks, A, B and C. Block C is below and B is to the left of A. Block A contains one small yellow circle. Block B contains a medium blue triangle and one big blue triangle. A medium blue circle is above a small black triangle. The medium blue triangle is above, to the left of and far from the small black triangle. The medium blue circle is to the right of and below the medium blue triangle. Block C has a small black triangle and a medium yellow square. It also has one medium black circle. Above the medium yellow square there is the small black triangle. The medium yellow square is touching the bottom edge of this block. To the left of and below the medium black circle there is the small black triangle.
What is below the small yellow circle? a medium blue triangle or a small black triangle?
medium blue triangle  small black triangle  both of them none of them