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