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