There are three blocks, A, B and C. Block A has one medium black circle. Block B is to the left of block A. It has a small black square and one medium yellow circle. To the right of the medium yellow circle there is the small black square. Above block B there is block C. It contains a small blue square. Above and to the left of a big yellow triangle there is the small blue square. The big yellow triangle is touching the bottom edge of this block. Above the big yellow triangle there is a medium yellow circle.
What is above the big thing? a small blue square or a small black square?
small blue square  small black square  both of them none of them