When can a company achieve sustainable competitive advantage?

a. Whenever it possesses the most profitable business model in the industry and can satisfy shareholder expectations better than its competitors
b. When elements of the strategy give buyers lasting reasons to prefer a company's products or services over those of competitors
c. When it is able to produce better products for lower costs than its rivals
d. When it consistently achieves both its long-term and short-term strategic and financial objectives
e. If it can translate its vision, mission, and values into a well-crafted strategy