There are three blocks, A, B and C. A medium blue triangle is in block A. Then, there is block B which has one small black triangle and one big blue triangle. The small black triangle is above and to the left of the big blue triangle. Block C is below block B and above block A. It has a small black triangle and one medium black square. To the left of and above the medium black square there is the small black triangle.
What is above the medium blue triangle? a small black triangle or a big blue triangle?
small black triangle  big blue triangle  both of them none of them