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