We have three blocks, A, B and C. Block C is to the right of A. Block B is to the right of C. Block A has one small blue circle. This block also has a medium yellow circle. This block also has one medium blue square. The medium blue square is below the small blue circle and the medium yellow circle. Block B has one medium black square. And block C contains a small black triangle.
Which object is to the left of a medium black square? the medium blue square or the medium yellow circle?
the medium blue square  the medium yellow circle  both of them none of them