Answer:
The correct answer is letter "B": The customer is king.
Explanation:
Marketing has evolved along time. We can identify five (5) eras in the marketing evolution: The Production Era, The Product Era, The Selling Era, The Market-oriented Era, and The Holistic Era.
In the Market-oriented Era (developed around the 50s) customers were the center of production. Companies focused their efforts to manufacture goods according to consumers' demands. Thus, a phrase such as:
"The customer is king";
would be typical of this marketing era.
