- Question 17 Not yet answered Marked out of 8.00 P Flag question For the following alternatives, answer the questions below. [8] Incremental B/C when PW of Alternative compared with B/C Ratio alternative Costs, $ Benefits, $ Disbenefits, $ 3 K L M J 20 22 4 0.90 1.57 2.00 K 23 28 5 ed 2.50 Fir 4 THE K a L 35 6 1.07 0.50 27 25 M b 2 1.12 1. Determine the values of the letters a, b, c and d and show your calculations. [4] 2. Out of the four alternatives, which ones are economically infeasible? Why? [2] 3. Out of the four alternatives, which one is the best alternative? Show your analysis. [2]