In Comparing the Types of Skills Used by Managers at Different

In comparing the types of skills used by managers at different levels within an organization,it is generally true that:

A) top managers use mainly technical skills and middle and first-line managers use mostly conceptual skills.
B) first-line managers use mainly technical and human relations skills,while top managers devote most of their time to activities involving human relations and conceptual skills.
C) the types of skills used by managers do not change much from one level of management to another.
D) the specific skills used at different levels of management do vary,but conceptual skills are the most important at all levels.