We have three blocks, A, B and C. Block A is to the right of C. Block C is above B. Block A has a medium yellow triangle and one big black square. Above the big black square there is the medium yellow triangle. A medium yellow circle is above and to the right of the big black square. The big black square is touching the bottom edge of this block. Block B contains one small black triangle and one small yellow triangle. A medium blue circle is to the right of the small black triangle and the small yellow triangle. The small black triangle is below the small yellow triangle. Block C has a small blue square.
Which object is below a small yellow triangle? the medium blue circle or the small black triangle?
the medium blue circle  the small black triangle  both of them none of them