The least common multiple (LCM) of lives need not be used when evaluating two alternatives by the annual worth method because, if inflation and deflation effects are neglected, a. the assumptions for annual worth analysis are different from those for the present worth method. b. cost and revenue estimates never remain the same over more than one life cycle. c. the annual worth value used to evaluate the alternatives is determined over a large number of life cycles. d. the annual worth over one life cycle is assumed to be the same for all succeeding life cycles