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