There are three blocks, A, B and C. Blocks C and A are to the left of B. Block A has a medium yellow square, a medium blue square and a big yellow triangle. The medium yellow square is to the left of the medium blue square which is near to and below the big yellow triangle. Block B has a medium yellow square. It also has a big black circle. The big black circle is above the medium yellow square. The medium yellow square is touching the bottom edge of this block. And block C has one medium black triangle and one big blue triangle. Below the big blue triangle there is the medium black triangle.
What is to the left of the medium blue square? a big blue triangle or a medium yellow square which is touching the bottom edge of a block?
big blue triangle  medium yellow square  which is touching the bottom edge of a block  both of them none of them