Rating Performance Criterion Service A Service B Service C Capital equipment investment required 0.8 0.4 0.7 Expected return on investment (ROI) 0.3 0.2 0.9 Compatibility with current workforce skills 0.8 0.3 0.8 Competitive advantage 0.2 0.7 0.3 Compatibility with EPA requirements 0.5 0.7 0.8 a. Calculate a total weighted score for each alternative. Use a preference matrix and assume equal weights for each performance criterion. Let the total of the weights equal 100. (Enter your responses as integers.) Service Total Weighted Score 52 B 46 C 70 Which alternative is best? Worst? O A The best alternative is service B and the worst is service C B. The best alternative is service B and the worst is service A OC. The best alternative is service A and the worst is service C D. The best alternative is service C and the worst is service B. O E. The best alternative is service A and the worst is service B. OF. The best alternative is service C and the worst is service A. b. Suppose that the expected ROI is given twice the weight assigned to each of the remaining criteria. (Sum of weights should remain the same as in part (a).) Does this modification affect the ranking of the three potential services? The best alternative is now service C with a total weighted score of - (Enter your response rounded to one decimal place.)