There are three blocks. We call them A, B and C. Block A is above blocks B and C. Block A contains two medium blue circles. Near to and above medium blue circle number one is a big black square. It is to the right of medium blue circle number two. Block B has a big blue circle and a medium yellow circle. Above and to the left of the big blue circle is a medium black circle. The big blue circle is below the medium yellow circle. Block C contains one medium blue triangle.
Which object is below a medium blue circle? the medium yellow circle or the big black square?
the medium yellow circle  the big black square  both of them none of them