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