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