There are three blocks, A, B and C. Block B is to the right of A and block C is below B. Block A has a big yellow triangle. Block B contains a small black triangle. Block C contains one big black triangle, a big blue triangle and a small yellow triangle. This block also has one big yellow square. The big yellow square is to the left of and near to the small yellow triangle. To the left of the big blue triangle and the small yellow triangle there is the big black triangle. The big blue triangle is to the right of the small yellow triangle.
What is to the left of the small yellow triangle? a big black triangle or a big yellow square?
big black triangle  big yellow square  both of them none of them