Tahle. O4ii) Information on Item A Tahle Ra4ii) Information on Item R a. Table Q4(i) and Q4(ii) provides the information on Item A and Item B for the assessment of Replacement Analysis. In addition to the total marginal cost, the Equivalent Uniform Annual Cost (EUAC) is also noted. As an engineer with proficiency in Engineering Economics, for noted timeline, determine the following quantitative assessment: Note: - Supporting qualitative justification and additional explanation is also warranted if necessary for certain scenario. i. Scenario 1: Defender A vs. Challenger B with respect to Replacement Analysis. ii. Scenario 2: Defender B vs. Challenger B with respect to Replacement Analysis. iii. Scenario 3: Defender A vs. Defender B with respect to Replacement Analysis, however, Defender A shall be completely obsolete (e.g. no spare parts, no warranty) beyond its Economic Life. iv. Scenario 4: Challenger A vs. Challenger A with respect to Replacement Analysis.