182. Sajitha: Sales of Lodgewood's specialty microbrew beers increased steadily from 2000 to 2002. The rise in sales was probably due in large part to the new label and ads developed by their advertising firm, which played up the microbrewery's local history.

Kyle: There must be another explanation: The data you cite show the rise in sales started in early 2000. Yet the company's new advertising campaign did not go into effect until September of that year.

Which of the following, if true, would most seriously weaken the force of the objection that Kyle presents to Sajitha's explanation?