Assignment 3: Waterfall versus AgileResearch agile methodologies including SCRUM and extreme programming (XP). Write a two to three (2-3) page paper in which you:Describe the waterfall methodology and identify its relationship to the PMBOK® process groups.Describe the agile methodology and identify its relationship to the PMBOK® process groups.Contrast waterfall and agile methodologies.Describe XP and defend or criticize the practice. Use at least two (2) quality resources in this assignment. Note: Wikipedia and similar Websites do not qualify as quality resources. Your assignment must follow these formatting requirements:Be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides; citations and references must follow APA or school-specific format. Check with your professor for any additional instructions.Include a cover page containing the title of the assignment, the student’s name, the professor’s name, the course title, and the date. The cover page and the reference page are not included in the required assignment page length.