There are three blocks, A, B and C. Block B is above blocks C and A. Block A has one medium black triangle. Block B has two small black squares. Small black square number one is below small black square number two. This block also contains one big black triangle. Near to small black square number one and the big black triangle is a small yellow circle. Block C has one small blue triangle.
Which object is above a medium thing? small black square number two or small black square number one?
small black square  number two small black square  number one both of them none of them