We have three blocks, A, B and C. Block C is to the right of block B and it is to the left of block A. Block A has a small blue square. Block B contains a small blue square, one medium yellow square and one medium blue triangle. The medium blue triangle is touching the right edge of this block. Below the medium blue triangle is the small blue square. The medium yellow square is below and to the left of the medium blue triangle. And block C has a big blue square. A medium black square is to the left of the big blue square.
What is below the triangle? a small blue square or a big blue square?
small blue square  big blue square  both of them none of them