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