6. U.S. Treasury bonds are not rated. Why? Often, junk bonds are not rated. Why? 7. Fuji Software, Inc., has the following two projects. Year Project A Project B 0 -10000-12000 1 6500 7000 2 4000 4000 3 1800 5000 a. Suppose Fuji's payback period cutoff is two years. Which of these two projects should be chosen? b. Suppose Fuji uses the NPV rule to rank these two projects. Which project should be chosen if the appropriate discount rate is 15 percent? c. Do the two rules yield the same decision? If not, why