There are three blocks, A, B and C. Block A has a small yellow square. Block B is below block A. It has one big black circle, one big yellow square and one small black triangle. The big black circle is below the small black triangle. The big yellow square is touching the bottom edge of this block. It is below the small black triangle. Far from and to the right of the big yellow square there is the big black circle. To the right of block B there is block C. It contains one small black circle, one medium yellow circle and one big yellow circle. To the left of and below the medium yellow circle which is to the right of the big yellow circle is the small black circle. The big yellow circle is touching the bottom edge of this block.
Which object is to the left of a small black circle? the small yellow square or the big yellow circle?
the small yellow square  the big yellow circle  both of them none of them