We have three blocks, A, B and C. A big blue triangle and one small yellow square are in block A. The big blue triangle is to the right of the small yellow square. Then, there is block B with a big black square and one small blue circle in it. The big black square is touching the bottom edge of this block. It is below and to the right of the small blue circle. Finally, above block B we have block C. It is above block A. It has a small black triangle.
What is below the small black triangle? a big blue triangle or a yellow square?
big blue triangle  yellow square  both of them none of them