16. Goal programming can be used to handle problems with how many different objectives or goals? a. 1 b.2 c. 3 d. 4 e. Any number of objectives or goals. 17. Which of the following are changing cells in a goal programming formulation? a. Activity levels. b. Deviations from the goals. c. The weighted sum of deviations. d. All of these. e. a and b only. 18. In which of the following situations is preemptive goal programming more appropriate than weighted goal programming? a. When there are major differences in the importance of the goals. b. When all of the goals are roughly equal in importance. c. When there is a single objective or goal. d. None of these. e. b and c only. 19. In weighted goal programming, the objective is to: a. Minimize the weighted sum of deviations from the goals. b. Minimize the deviation from the most important goal. c. Meet the most important goal. d. Maximize the profit. e. None of these. 20. In preemptive goal programming, the first step is to: a. Minimize the weighted sum of deviations from the goals. b. Minimize the deviation from the most important goal. c. Meet the most important goal. d. Maximize the profit. e. None of these. 21. In preemptive goal programming, the most important thing is to: a. Come as close as possible to meeting all the goals. b. Achieve, or come as close as possible, to meeting the most important goal. c. Minimize the weighted sum of deviations from the goals. d. Maximize the profit. e. All of these