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