Dear Friend,
Incremental analysis is used to find the impact of changes in costs or revenues, given a specific potential scenario. Decisions involving incremental analysis include the Make or buy, Sell or process further, Special order and Changes in production and/or technology among many other relevent application.
Now, Coming to your Query,
PW of benefits = (UAB)(P/A,7%,20) = UAB (11.470)
Each line length from an Alternative point to the 45-degree line is the NPW of the Alternative. The project with the greatest NPW is thus the one with the longest line dropped from it to the 45-degree line. Therefore, the Alternative "C" should be selected.
I hope the above helps,
Regards...
Financial Advisor
Technical Analyst in Financial Markets -- Experience of more than 10 years in consulting
I have replied to you as above. Please let me know if it helped. Prompt response shall be appreciated.
Regards....