There are three blocks, A, B and C. Blocks C and B are to the left of A. Block A has one medium black square and one medium blue circle. The medium black square is below the medium blue circle. Block B contains a medium blue circle. And block C contains a medium yellow square and a big black circle. Above and to the left of the big black circle there is a medium yellow circle. The big black circle is touching the right edge of this block. To the right of the medium yellow square there is the medium yellow circle.
What is to the right of the black circle? a medium yellow circle or a medium blue circle?
medium yellow circle  medium blue circle  both of them none of them