There are three blocks, A, B and C. Block B is to the right of C and block A is below B. Block A contains a small yellow square. Block B has two medium black triangles. Medium black triangle number one is to the right of a medium yellow circle and medium black triangle number two. Block C has one medium yellow triangle.
What is above the yellow square? a circle or a medium yellow triangle?
circle  medium yellow triangle  both of them none of them