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