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