We have three blocks, A, B and C. Block A is to the right of and B is below C. Block A contains a small yellow triangle and a big yellow circle. The small yellow triangle is near to the big yellow circle. The big yellow circle is touching the bottom edge of this block. Block B contains a big blue triangle and one big black triangle. The big black triangle is below and touching a small yellow triangle. The big blue triangle is touching the bottom edge of this block. The small yellow triangle is touching the top edge of this block. Below the small yellow triangle is the big blue triangle. And block C contains one small black triangle.
What is below the small black triangle? a yellow circle that is touching the bottom edge of a block or a big black triangle?
yellow circle  that is touching the bottom edge of a block  big black triangle  both of them none of them