There are three blocks, A, B and C. Two big yellow squares are in block A. It also contains a small black circle. Big yellow square number one is touching the right edge of this block. This block also has a medium black circle. To the right of a big black square is big yellow square number two. Big yellow square number one is below the big black square and big yellow square number two. Then, there is block B. It has a small blue circle. Block C is below block B and above block A. It contains a big blue square, one big black triangle and a small black triangle. To the left of the big black triangle and the small black triangle there is the big blue square.
What is below the big blue square? a small black circle or a small blue circle?
small black circle  small blue circle  both of them none of them