TOPIC: Week 9- Effective and Efficient Business FunctionsDiscussion QuestionStudents must support their discussion with at least 4 academically reviewed articles. (Wikipedia, Smallbusinesschron.com and other internet articles are not acceptable. Professor reviews the originality of all postings). Do not copy and paste.There are three levels of management hierarchy: strategic, managerial and operational.Part 1: Review at least 4 academically reviewed articles on each management hierarchy. Summary the articles in your own words.Part 2: Discuss how the three levels of management hierarchy: strategic, management, and operational relates to the mission of a business.Part 3: As an IT professional, how would you use information technology to improve the efficiency the three levels of management hierarchy?