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