There are three blocks. We call them A, B and C. A big black circle is in block A. To the left of a small yellow triangle is the big black circle. The small yellow triangle is below a small blue circle. The small blue circle is touching the right edge of this block. Below the small blue circle is the big black circle. Above block A we have block B. It has a big black triangle. Finally, there is block C which is below block A. It has one medium black square, a small yellow triangle and one medium blue circle. The medium blue circle is above and to the left of a small blue triangle. This block also has a small blue circle. The medium black square is below the small blue circle. Near to and to the left of the small blue circle is the small yellow triangle.
What is below the big black triangle? a small blue circle or a big black circle?
small blue circle  big black circle  both of them none of them