A Company's Internal Strengths Should Always Serve as the Basis

A company's internal strengths should always serve as the basis of strategy because:

A) placing heavy reliance on the company's best competitive assets is the soundest route to attracting customers and competing successfully against rivals.
B) they represent what the company considers relevant despite the prevailing opportunities.
C) they can overpower the impact of important external threats.
D) they form the foundation of the firm's position in the marketplace.
E) All of these.