Which of the Following Is NOT True

Which of the following is NOT true?

A) There is a network of farmers, politicians, and bureaucrats that has effectively blocked efforts to reform Japan's food supply system.
B) Until the early 1990s, Japan maintained a nearly total ban on foreign rice.
C) Japan is self-sufficient in food production even though its supply system is generally outdated and top heavy.
D) Japanese agricultural policies have not focused on crop diversification.
E) Japan's self-sufficiency in food supply plummeted to about 40% in 2007.