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