We have three blocks, A, B and C. Block C is above B. Block B is to the left of A. Block A has one small blue triangle. Block B has one small blue triangle and one small black square. A big black square is to the right of and below the small black square. The small blue triangle is touching the right edge of this block. It is to the right of and below the small black square. And block C contains a small blue triangle and one small black triangle. The small black triangle is touching the right edge of this block. To the left of and below the small black triangle is the small blue triangle.
What is to the right of the small black square? a big square or a small black triangle?
big square  small black triangle  both of them none of them