What you can infer from this passage is that publication of "Ann Landers" ceased in 2002 (D).
Indeed, the text tells us that Esther Lederer, the legal author of "Ann Landers," died in 2002 without passing on the rights to her pen name— which is also the name of her column—to anyone else ("she chose not to have another writer assume the pen name"). Since she did not allow any other writer to use the "Ann Landers" name, we can assume she didn't pass on the column's rights either.