We have three blocks, A, B and C. Blocks A and B are above C. Block A has a big black circle. Block B contains a small black circle and one big blue circle. The small black circle is to the left of a medium blue circle and the big blue circle. The medium blue circle is touching the right edge of this block. It is above the big blue circle. And block C contains one small yellow triangle.
Which object is above a yellow shape? the big blue circle or the big black circle?
the big blue circle  the big black circle  both of them none of them