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