There are three blocks. We call them A, B and C. One small black circle, a small blue circle and one medium black triangle are in block A. Below the small blue circle is the small black circle. The small blue circle is to the right of the medium black triangle.. The small black circle is to the right of the medium black triangle. Block B is below block A. It has a medium yellow triangle, one medium blue triangle and a big yellow circle. The medium yellow triangle is touching the right edge of this block. The medium blue triangle is above the big yellow circle. To the right of the big yellow circle and the medium blue triangle there is the medium yellow triangle. To the right of block B there is block C which contains one big blue square and one big black triangle. The big blue square is near to and to the left of the big black triangle.
Which object is below a medium black triangle? the small black circle or the big yellow circle?
the small black circle  the big yellow circle  both of them none of them