Consider the following statements about a firm:

I. The debt beta of a firm is usually quite low. If we assume that the debt beta is zero, the equity beta of a firm must exceed the asset beta of the firm. II. If the WACC is used to evaluate a project that is more risky than the other operations of the firm, then there is a chance that a project will be rejected incorrectly III. Shareholders, as residual claimants to the profits of a firm, tend to remain owners of highly leveraged firms when they feel that the benefits of the tax deductibility of interest payments to their creditors outweighs the risk of bankruptcy. It is apparent that:

a) only statement I is true. b) only statement II is true. c) only statement III is true. d) only statements I and II are true. e) only statements I and III are true.