There are three blocks, A, B and C. A small blue triangle and a small yellow circle are in block A. The small yellow circle is touching the right edge of this block. To the left of the small yellow circle is the small blue triangle. Then, we have block B which contains two big yellow squares. It also contains one small yellow triangle , one big blue triangle and one small blue circle. The small yellow triangle is to the left of big yellow square number two. This shape is below the small blue circle and the big blue triangle. Block C is above blocks B and A. It has one small yellow square, one big yellow square and one medium blue square. To the left of the medium blue square and the big yellow square there is the small yellow square. The big yellow square is above a small black triangle. It is near to the medium blue square which is to the right of the small black triangle.
Which object is to the left of a big yellow square? the small black triangle or the small yellow triangle?
the small black triangle  the small yellow triangle  both of them none of them