Suppose that in an hour Chip can gather 8 pounds of fruit or 4 pounds of nuts. In an hour, Mike can gather 9 pounds of fruit or 3 pounds of nuts. Which of the following choices would benefit both Chip and Mike if trade occurred?

A. 1 pound of nuts for 2.5 pounds of fruit

B. 1 pound of nuts for 1 pound of fruit

C. 1 pound of nuts for 1/2 pound of fruit

D. 1 pound of nuts for 3.5 pounds of fruit