We have three blocks, A, B and C. A big yellow circle is in block A. To the left of block A is block B. It contains a small black triangle. A big yellow circle is touching the bottom edge of this block. It is to the right of and below the small black triangle. Finally, we have block C below block B. It contains one small black triangle and one medium black square. To the left of the medium black square is the small black triangle.
What is below the object that is touching the bottom edge of a block? a medium black square or a small black triangle?
medium black square  small black triangle  both of them none of them