There are three blocks, A, B and C. A small blue triangle and one small yellow circle are in block A. Above the small yellow circle is the small blue triangle. To the right of block A there is block B. It has one medium yellow square. Above block A there is block C. It has one medium black circle and a big black triangle. To the left of the medium black circle and the big black triangle is a small black circle. The big black triangle is touching the right edge of this block. The medium black circle is touching the right edge of this block. This object is below the big black triangle.
What is above the small yellow circle? a medium yellow square or a big black triangle which is touching the right edge of a block?
medium yellow square  big black triangle  which is touching the right edge of  a block  both of them none of them