We have three blocks, A, B and C. Block B is above and C is to the left of A. Block A contains a medium blue triangle and one small blue triangle. This block also contains one small yellow circle. It is below and near to the small blue triangle. The medium blue triangle is below the small yellow circle. Block B has one small yellow triangle. And block C contains a medium yellow circle and a big yellow square. It also has one small yellow triangle. Below, near to and to the left of the big yellow square there is the medium yellow circle. To the right of and above the small yellow triangle is the big yellow square.
What is above the medium blue triangle? a big square or a small blue triangle?
big square  small blue triangle  both of them none of them