Measurement & Verification and PI Form 1

I'm still not completely clear on the reporting commitment for energy and water usage data. The responses to prior questions about this subject indicate a reporting commitment of 5 years if Option 1 in PI Form 1 and Option 3 in EA c5 form are checked, but if Option 2 in PI Form1 and an M&V plan are submitted instead the reporting period is much shorter. But the language early in Item #6 in PI Form 1 clearly states "at least 5 years" so the impression is created that the owner ( barring exemptions due to lack of meters ) will necessarily be reporting to the USGBC for 5 years as part of meeting the MPR. Am I misinterpreting something?