New PMP Question & Answers with explanation

According to the PMBOK® Guide, all of the following are elements of a business case except for which one?
Select one
Which of the following is not true about the benefits management plan?
Select one
You are the project manager for Fun Days Vacation Resorts. Your new project assignment is to head up the Fun Days resort opening in Austin, Texas. First, you estimate the duration of the project management plan activities. When that activity is complete, you start devising the project schedule, and once the work has started, you will follow the process involved with monitoring and controlling deviations from the schedule. Which of the following is true regarding this question?
Select two
The Integration Knowledge Area is highly interactive and may involve iteratively performing the Planning, Executing, and Monitoring and Controlling processes. Which of the following is true regarding this Knowledge Area?
Select two
Which of the following is true regarding the project charter?
Select two