What can management researches infer based on this study? Checkall that apply

1.Junior managers do not use cognitive skills.

2.If managers want to progress from the junior to seniormanagement, they will have to acquire strategic skills at a fasterrate than they acquire cognitive skills.

3.Having a strong interpersonal skills can make up for a lack ofbusiness skills.

4.Cognitive skills show the least change in level requiredbetween junior-level and senior-level managers.

In 2007, Mumford, Campion, and Morgeson studied approximately 1,000 managers, spread across junior, midlevel, and senior-level positions. They were interested in knowing how different levels of managers used four types of skills: cognitive, interpersonal, business, and strategic. The results of their study are shown in the following graph. LEVEL OF SKILL REQUIRED 6.0 5.5 5.0 4.5 4.0 Cognitive Skills Interpersonal Skills Strategic Skills Business Skills Junior Midlevel Senior Research Study ORGANIZATIONAL LEVEL Source: Mumford, T. V., Campion, M. A., & Morgeson, F. P. (2007). "The Leadership Skills Strataplex: Leadership Skill Requirements Across Organizational Levels." The Leadership Quarterly 18: 154-166.