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