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