There are three blocks, A, B and C. Block C is below A and block A is below B. Block A contains two medium yellow squares. Medium yellow square number one is below a small yellow circle which is below and near to medium yellow square number two. This block also has a medium yellow triangle. This object is to the right of and below medium yellow square number two. Block B contains one big black triangle. Block C has one small black circle. There is also a medium black triangle in this block. This block also contains a medium yellow square. The medium yellow square is to the left of the medium black triangle. The medium black triangle is below and to the right of the small black circle.
Which object is above a small black circle? the medium black triangle or the big black triangle?
the medium black triangle  the big black triangle  both of them none of them