8. According to Snapshot from Practice 2.2, how can Frontier Airlines get to a backlog of over hundreds of projects? All of these alternatives are correct. (-Sacred cow projects get included in the selection system. - Projects proposed from people who have left the airline still reside in the project portfolio. - Non-value added projects make their way into the project portfolio. - Project completion and productivity are slow because of everyone in IT working on too many project concurrently.)