There are three blocks, A, B and C. Block B is to the left of C and block A is to the right of B. Block A has a small black circle. This block also contains a small blue triangle. To the left of the small black circle there is the small blue triangle. Block B has one small yellow square, a big black circle and a big black square. Below and to the left of the big black square is the small yellow square. Below the big black square there is the big black circle. Block C contains one small blue triangle.
Which object is to the left of a small blue triangle? the big black square or the small yellow square?
the big black square  the small yellow square  both of them none of them