Management of Wile-IT Computing Company is also reviewing three different investment scenarios for the follow-on phase the solar power generation project. The different alternatives and their net cash flows are shown in the following table.

Using incremental rate-rate-of-return analysis, determine which alternative should be selected if the firm must choose an option and if a do- nothing option is available. Wile-IT Computing Company uses a MARR of 35%.

Construct the following: * An incremental rate-of-return network diagram and navigation path if an alternative must be selected * An incremental rate-of-return network diagram and navigation path if a do-nothing option is available

3. (a) Internal and incremental cash flows