The Difference Between a Company Competence and a Core Competence

The difference between a company competence and a core competence is that

A) a company competence refers to a company's best-executed functional strategy and a core competence refers to a company's best-executed business strategy.
B) a company competence refers to a company's strongest resource whereas a core competence refers to a company's lowest-cost and most efficiently performed value chain activity.
C) a company competence is a competitively relevant activity which a firm performs especially well relative to other internal activities, whereas a core competence is an activity that a company has learned to perform proficiently.
D) a company competence represents real proficiency in performing an internal activity whereas a core competence is a competitively relevant activity which a firm performs better than other internal activities.
E) a core competence usually resides in a company's technology and physical assets whereas a company competence usually resides in a company's human assets and intellectual capital.