New PMP Question & Answers with explanation

Which of the following is true?
Select one
Your selection committee is debating between two projects. Project A has a payback period of 18 months. Project B has a cost of $125,000, with expected cash inflows of $50,000 the first year and $25,000 per quarter after that. Which project should you recommend?
Select one
Which of the following is true regarding stakeholders and the project charter?
Select three
Which of the following is not true regarding the purpose of a business case?
Select one
Which of the following is true regarding IRR?
Select one