We have three blocks, A, B and C. Block A contains a small blue triangle. Below the small blue triangle there is a big yellow square. Then, there is block B. It has a big black triangle. One small black triangle is also in this block. Above the big black triangle there is the small black triangle. Finally, we have block C. It is to the right of block B and block A is to the left of it. It has one big blue square.
What is to the left of the big blue square? a big black triangle or a small black triangle?
big black triangle  small black triangle  both of them none of them