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