A U.S. T-bill that matures for 10,000 in 90 days costs 9,800. A Canadian T-bill that matures for 10,000 in 180 days costs 9,600.

Let x and y be the quoted rate of the U.S. T-bill and Canadian T-bill, respectively.

Calculate 1,000(yx).

A) -0.5

B) -2.8

C) 1.1

D) 2.2

E) 4.5