What Is the Relationship Between a Firm's Industry Environment and the Firm's

What is the relationship between a firm's industry environment and the firm's earning potential?

A) A firm cannot influence the industry environment, and must focus on other factors in order to achieve above-average returns.
B) The more a firm can favorably influence its industry environment, the more likely it is to achieve above-average returns.
C) The less a firm is affected by its industry environment, the better situated it is to achieve above-average returns.
D) The more a firm can neutralize competitors' advantages, the greater its chances are for above-average returns.