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Problem 7: Dunn Manufacturing is considering the following two alternatives. The cost information for the two proposals for replacing an equipment are provided are in table below. 7a. The NPW of machine X is A) $35,158 B) $48,192 C) $50,752 D) $61,239 7b. The NPW of machine Y is A) $42,196 B) $29,508 C) $26,106 D) S32,103 7c. If machine " Y " has no salvage value, what would be the NPW of machine " Y "? B) $20,626 C) $23,478 D) $21,816