There are three blocks, A, B and C. A small yellow triangle is in block A. It also has one big yellow circle. To the left of the small yellow triangle there is the big yellow circle. Block B is below block A. It contains one big black circle. Above block A there is block C with a big blue triangle, a medium yellow square and a medium black circle in it. To the left of the medium black circle is the medium yellow square. To the left of, above and near to the medium black circle there is the big blue triangle.
Which object is below a big yellow circle? the medium black circle or the big black circle?
the medium black circle  the big black circle  both of them none of them