We have three blocks, A, B and C. Block A has a medium black circle. Block B is to the right of block A. It contains one small black triangle. Below block B there is block C. It contains a medium blue circle, a small black triangle and a medium yellow triangle. This block also has one small blue triangle. Above the small black triangle which is to the left of and below the medium yellow triangle is the medium blue circle. The medium yellow triangle is to the right of the small blue triangle. Below the medium yellow triangle there is the medium blue circle.
Which object is below a small black triangle? the medium black circle or the small blue triangle?
the medium black circle  the small blue triangle  both of them none of them