please help answer questions 1,2,3,4. thank you!

Martha's Bakery is thinking about replacing the convection oven with a new, more energy-efficient model. Information related to the old and new ovens follows: (Click the icon to view the information related to the old and new ovens.) Read the requirements. Requirement 1 and 2. Which of the costs and benefits above are relevant to the decision to replace the oven? What information is irrelevant? Why is it irrelevant? Begin by determining whether each item is relevant or irrelevant for this decision. If an item is irrelevant, select why it is irrelevant. (Make a selection for each item in the Old Oven and New Oven columns. In the "Why Irrelevant" column, only make a selection for irrelevant items. For relevant items, leave the input field blank; do not select a label.) Old Oven New Oven Why Irrelevant Original cost Accumulated depreciation Book value Current disposal value Installation cost Annual operating cost Terminal disposal value Data Table A A Original cost Accumulated depreciation Book value Current disposal value A New Oven 41,000 Not acquired yet Not acquired yet Not acquired yet 2,500 10,000 8 years O years A Old Oven 30,000 $ 6,500 18,000 11,000 Not applicable $ $ 15,000 $ 10 years 2 years 8 years $ 0 $ Installation cost Annual operating cost Useful life Current age Remaining useful life Terminal disposal value (in 5 years) 8 years Ignore the effect of income taxes and the time value of money 1. Which of the costs and benefits above are relevant to the decision to replace the oven? 2. What information is irrelevant? Why is it irrelevant? 3. Should Martha's Bakery purchase the new oven? Provide support for your answer 4. Is there any conflict between the decision model and the incentives of the manager who has purchased the "old" oven and is considering replacing it only two years later? 5. At what purchase price would Martha's Bakery be indifferent between purchasing the new oven and continuing to use the old oven