Which of the Following, If True, Would Strengthen the Manager's

Which of the following, if True, would strengthen the Manager's argument?

A) Many other corporations have adopted ACME's definition of leadership.
B) ACME's cross-functional team structure allows individuals to influence other people despite a lack of direct authority.
C) Most of the company's leaders have come from the Sales Department, and relatively few have come from the Quality Control Department.
D) ACME's Human Resources Department makes outstanding efforts to recruit a diverse group of employment candidates.
E) Executives at ACME are often recruited to serve in leadership positions at other organizations.