1.Sensitivity analysis: Analysis of how the project's NPV changes?

a. if different assumptions are made about net profit margins

b. if different assumptions are made about total costs

c. if different assumptions are made about sales, costs, and other key variables

d. all of the above

2. A companys marginal tax rate is 35%. and it invested in a tax-free municipal bond with a face value of $1,000 with a coupon interest rate of 10% Base upon this data the company has shielded away $ ________ ?