There are two blocks, A and B. Block A is above B. Block A has one medium yellow circle and one small blue triangle. Above the small blue triangle and a small blue square is the medium yellow circle. Above and to the left of the small blue triangle there is the small blue square. Block B has a small yellow triangle, one medium black square and a big black triangle. Above, near to and to the right of the medium black square which is to the left of and below the big black triangle is the small yellow triangle.
What is below the small blue square? a big black triangle or a medium circle?
big black triangle  medium circle  both of them none of them