There are three blocks. We call them A, B and C. Block A contains one big yellow square. Then, we have block B with one medium yellow square in it. Finally, we have block C which is to the left of block B. Block A is below it. It contains a big blue triangle, a small blue triangle and a medium blue triangle. There is also one big blue circle touching the right edge of this block. The big blue circle is to the right of the big blue triangle. It is below the small blue triangle and the medium blue triangle. The big blue triangle is near to the medium blue triangle. The small blue triangle is touching the right edge of this block.
Which object is above a big yellow square? the medium blue triangle or the big blue triangle?
the medium blue triangle  the big blue triangle  both of them none of them