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