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9. The following table gives total marginal cost estimates for a defender piece of equipment. Calculate the defender's EUAC (use MARR = 10%) for years 1-5. What is the defender's nimu Year EUAC Marginal Cost S31,250 $30,000 $28,000 $29,000 $36,250 4 Is this EUAC relevant for what your author calls Situation 1 replacement decisions? Situation 2 decisions? Briefly explain. Your textbook (Chapter 13) discusses how to go about doing a replacement analysis (keep a defender or replace it with a challenger) under various circumstances Briefly summarize what your text calls Techniques 1, 2, and 3 and the conditions under which eaclh technique is most appropriate. All three techniques implicitly make the repeatability assumption. Explain what this assumption entails and conditions under which it is not appropriate