There are two blocks, A and B. Block A is above B. Block A contains a big blue triangle, a small yellow square and a big blue circle. The big blue triangle is to the left of and below a big yellow triangle. The small yellow square is to the left of and below a big yellow circle. The big yellow circle is near to and below a small black circle. Block B contains one small black triangle.
Which object is above a small black triangle? the big yellow triangle or the big blue triangle?
the big yellow triangle  the big blue triangle  both of them none of them