We have three blocks, A, B and C. A small black square, a big yellow square and one medium blue triangle are in block A. The small black square is above the medium blue triangle and a big yellow triangle. The big yellow triangle is touching the right edge of this block. It is far from and to the right of the big yellow square. Then, we have block B which contains a medium blue circle. Block C is to the right of block B and above block A. It has a small blue square.
What is below the small blue square? a blue circle or a big yellow square?
blue circle  big yellow square  both of them none of them