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