The following problems are based on the following system. For each problem, determine whether or not the given dispatch is optimal. (20 points) The fuel cost functions for the three units are F(P)=749.55+7F +0.0028* F(P)=1285+8P, +0.001P F(P)=1331+6P +0.002P} The minimum and maximum capacities of the three units are Unit No. Poin (MW) P (MW) T 320 80 2 300 1200 3 275 1100 (1) If the load is 1300, the dispatch is , =387.5, F, =275,and P, =637.5. A. Yes, the dispatch is optimal. B. No, the dispatch is not optimal. (2) If the load is 2500, the dispatch is F;, =687.5, F, =875, and P, =937.5. A. Yes, the dispatch is optimal. B. No, the dispatch is not optimal. {3) If the load is 3000, the dispatch is =812 i P =1125 and P, =10625. A. Yes, the dispatch is optimal. B. No, the dispatch is not optimal. {4) If the load is 1200, the dispatch is =362.5, B =300, and P =612.5. A. Yes, the dispatch is optimal. . No, the dispatch is not optimal