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