We have three blocks. We call them A, B and C. There are one big yellow circle and a medium black circle in block A. Below the medium black circle is the big yellow circle. Then, we have block B with one small yellow square in it. It also contains one small black circle. Below and near to the small black circle there is the small yellow square. Finally, we have block C below both blocks A and B. It contains one small black triangle.
Which object is above a small black thing? the small black circle or the medium object?
the small black circle  the medium object both of them none of them