There are three blocks, A, B and C. Block A contains a big black triangle. To the left of block A is block B which has a small black circle and a big blue circle. Below and to the left of a big black circle there is the small black circle. The big blue circle is touching the bottom edge of this block. It is below the big black circle. The small black circle is touching the bottom edge of this block. This shape is near to the big blue circle. Below block A there is block C. It contains a big blue square, a big black square and one medium black square. To the left of a big yellow square and the medium black square is the big blue square. The big black square is touching the bottom edge of this block. This block also has a medium black circle.
What is to the left of the triangle? a big black circle or a medium black circle?
big black circle  medium black circle  both of them none of them