There are three blocks, A, B and C. A small blue square is in block A. Then, we have block B with one small black triangle, one medium yellow triangle and a medium blue triangle in it. To the left of, near to and below a big yellow square which is near to the medium blue triangle there is the small black triangle. The medium yellow triangle is to the left of the big yellow square. Finally, below block B we have block C which is to the right of block A. It contains one small yellow triangle.
What is above the small yellow triangle? a small blue square or a medium blue triangle?
small blue square  medium blue triangle  both of them none of them