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