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4.53 Dwayne has four independent vendor proposals to contract the nationwide oil recycling services for the Ford Corporation manufacturing plants. All combinations are acceptable, except that vendors B and C cannot both be chosen. Revenue sharing of recycled oil sales with Ford is a part of the requirement. Develop all possible mutually exclusive bundles under the additional following restrictions and select the best projects. The corporate MARR is 10% per year. Vendor A B C D Initial Investment, S -1.5 million -3.0 million -1.8 million -2.0 million Life, Year's 8 10 5 4 Annual Net Revenue, S/Year 360,000 600,000 620,000 630.000 a. Determine PW values for each vendor. b. A maximum of $4 million can be spent. c. A larger budget of $5.5 million is allowed, but no more than two vendors can be selected. d. There is no limit on investment