There are three blocks, A, B and C. Block A is below blocks B and C. Block A has one big blue triangle, one small blue square and a big yellow square. To the right of the big yellow square is the big blue triangle. It is touching the right edge of this block. This object is above the small blue square which is to the left of the big yellow square. Block B contains a big yellow circle. And block C contains a small black triangle, one big blue square and one small black circle. A big black square is touching the bottom edge of this block. The small black triangle is touching the bottom edge of this block. The big blue square is touching the right edge of this block. This shape is above the small black circle. The big black square is near to and to the right of the small black triangle which is to the left of and below the small black circle.
Which object is above a big blue triangle? the small black triangle that is touching the bottom edge of a block or the small blue square?
the small black triangle  that is touching the bottom edge of a block  the small blue square  both of them none of them