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