There are three blocks, A, B and C. Block A is to the right of B. Block B is below C. Block A contains a small black circle, one small black triangle and a big yellow triangle. Above the big yellow triangle and the small black triangle there is the small black circle. Block B has one big blue circle, a big blue triangle and a small black circle. The big blue circle is above the small black circle. The big blue triangle is to the left of the small black circle. The big blue circle is above the big blue triangle. Block C contains a big black circle.
Which object is above a small black circle? the big yellow triangle or the big black circle?
the big yellow triangle  the big black circle  both of them none of them