Suppose G is the generating function for the sequence 4, 7, 10, 13, 16, 19,…, the find a generating function (in terms of G) for the sequence of differences between terms.

• A. (1−x)G−4/x
• B. (1−x)G−4/x3
• C. (1−x)G+6/x
• D. (1−x)G−x2