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