There are three blocks. We call them A, B and C. A small blue square is in block A. This block also has a big blue triangle. This object is touching the right edge of this block. The small blue square is near to and below the big blue triangle. Then, there is block B which contains a medium yellow triangle. Finally, we have block C. It is above block A and to the left of block B. It contains a small black circle and a big black circle. Below the big black circle there is the small black circle. The big black circle is touching the right edge of this block.
What is above the big blue triangle? a big black circle or a small square?
big black circle  small square  both of them none of them