Part 1: Please use APA throughout. 300 words min excluding references. There are three levels of management hierarchy: strategic, managerial and operational. A: Review at least 4 academically reviewed articles on each management hierarchy. Summary the articles in your own words. B: Discuss how the three levels of management hierarchy: strategic, management, and operational relates to the mission of a business. C: As an IT professional, how would you use information technology to improve the efficiency the three levels of management hierarchy? Part 2: Please use APA throughout. 300 words min excluding references. Technology and Enterprise Resource Planning As an IT manager, discuss how your company will use Enterprise Resource Planning (ERP) to integrate the various functions of an entity. What are the advantages of using ERP? In your discussion, please be sure to provide substantive explanation of what ERP is and give example(s) of ERP.