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