Which of the following, if true, gives the strongest support for the researchers' claim? A. Some South American countries have begun to grow kiwi fruit successfully. B. United States chemists have started development of a synthetic kiwi extract. C. The manufacturers of Megapower chose not to renew their contract with the Tasmanian kiwi growers. D. Imports of kiwi fruit have fallen in the country where Megapower is manufactured. E. There was a marked drop in sales of a number of formerly profitable items that used kiwi as an ingredient.