单选题 Which of the following best defines organizational behavior

A. It involves the study of groups of people coming together for collective bargaining

B. It involves the study of what people do in a company and how it affects the company's output

C. It involves analyzing different people in an industry with independent profit-centered motives

D. It involves developing exclusively the knowledge of managers and senior-level employees

E. It is a field which is not influenced by factors in the external world