There are three blocks, A, B and C. A small blue square and one small blue triangle are in block A. A big yellow circle is near to the small blue triangle. The small blue square is to the left of the small blue triangle. To the right of the square which is to the left of the small blue triangle is the big yellow circle. Then, we have block B which contains one small yellow square. Finally, below block A we have block C. It is to the right of block B. It contains a medium black circle.
What is above the medium thing? a small blue square or a small yellow square?
small blue square  small yellow square  both of them none of them