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