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