The correct answer is given in option A. Because if decision maker has an optimistic approach, this method can be used. In this method, whether the objective of problem is maximization or minimization, the best outcome for each alternative is realized and decision maker select the best among these alternatives. If the problem is the minimization, the best outcome is the lowest value. In this case, the alternative which is the smallest value is chosen. The mathematical representation of the method is as follows: