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