There are three blocks. We call them A, B and C. Block B is below and C is above A. Block A contains one small black square and one small blue circle. The small black square is to the left of and below the small blue circle. The small blue circle is touching the right edge of this block. Block B has one big yellow square and one medium black circle. Below the medium black circle there is the big yellow square. And block C contains one medium blue triangle. This block also has one medium blue circle. This block also has a big blue square. The medium blue circle is below, to the left of and near to the medium blue triangle.
Which object is above a big square? the medium blue circle or the big blue square?
the medium blue circle  the big blue square  both of them none of them