There are three blocks, A, B and C. Block B is to the left of A and block A is below C. Block A contains one small black circle. Block B has two small blue triangles. This block also has a small blue square.. To the left of small blue triangle number two is small blue triangle number one. It is below and to the right of the small blue square. And block C contains one medium yellow square, one small black triangle and a medium black triangle. Below the medium black triangle and the small black triangle is a big blue triangle. The medium yellow square is touching and to the right of the medium black triangle. This shape is below the small black triangle.
Which object is to the left of a small blue triangle? the big blue triangle or the small blue square?
the big blue triangle  the small blue square  both of them none of them