In the Context of Line-And-Staff Organizations, Which of the Following

In the context of line-and-staff organizations, which of the following is a difference between line managers and staff managers?

A) Line managers report directly to senior managers, whereas staff managers report directly to line managers.
B) Line managers focus on legal, accounting, and human resources functions, whereas staff managers focus on production and marketing functions.
C) Line managers supervise the functions that contribute directly to profitability, whereas staff managers supervise the functions that provide advice and assistance to the line departments.
D) Line managers have minimum authority, whereas staff managers form the primary chain of authority in an organization.