New PMP Question & Answers with explanation

What are three characteristics of an Agile PMO?
Select three
You are developing the cost baseline and the project budget. You know that all of the following are true regarding these two elements except for which one?
Select one
Within Agile approaches, how are requirements documented?
Select one
Alyssa is a project manager tasked with managing an infrastructure project that will consolidate five data centers into one. She has used a waterfall approach to carry out initial planning activities and is executing the work using an Agile-based approach. She shows the team how much work remains to be completed during their current iteration and the forecast of work to be completed for the remaining iterations based on existing velocity. What is Alyssa showing them?
Select one
What is the difference between inspection and prevention, in regard to quality?
Select one