10.8 Five independent projects were ranked in decreas- ing order by two measures-rate of return (ROR) and present worth (PW)-to determine which should be funded with the total initial investment not to exceed $30 million. (a) Use the results below to determine the opportunity cost in ROR terms for each measure. (b) If a MARR of 15% per year is a firm requirement, how does the opportu- nity cost help in selecting projects to fund? Measures for Each Project Ranking by ROR Ranking by PW PW at ROR, 15%, Initial Investment, Cumulative Cumulative Investment, Investment, Project % $1,000 $1,000 Project $1,000 Project $1,000 A 44.5 7,138 8,000 A 8,000 A 8,000 B 12.8 -1.162 15,000 E 13,000 16,000 20.4 1,051 8,000 21,000 E 21,000 D 9.6 -863 8,000 B 36,000 D 29,000 E 26.0 936 5,000 D 44,000 B 44,000