The defender should be kept for more years and then replaced When a decision to replace the defender was already made and the only remaining question is when to replace the defender should be kept for another year so long as Select one a the depreciation expense for the defender is smaller than the depreciation expense for the changes b. the after -sale value of the defender is smaller than the acquisition price of the challenger the acquisition price of the challenger is greater than the marginal cost of keeping the defender for another year O d the marginal cost of keeping the defender for another year is smaller than the annual uniform equivalent cost of the challenges over its economice 6 For a standalone project, a public project is accepted its benefit to cost ratio is Not yet Post Select one a greater than one maller than one maller than d. greater than er Which of the below is a correctement regarding the benefit to conto Select one