We have three blocks, A, B and C. Block A is to the right of C and block B is above A. Block A has two small blue triangles. Small blue triangle number one is to the right of small blue triangle number two. Small blue triangle number two is above and touching a medium black circle. It also contains one big black square. The medium black circle is touching the bottom edge of this block. Above and to the left of the big black square there is small blue triangle number two. Block B contains a medium yellow square. And block C contains one small blue triangle and one big blue circle. The small blue triangle is touching, to the left of and below a big black triangle.
What is below the yellow object? a small blue triangle or a big black square?
small blue triangle  big black square  both of them none of them