The Difference Between "Production Orientation" and "Marketing Orientation" Is Best

The difference between "production orientation" and "marketing orientation" is best explained as follows:

A) there are no separate functional departments in a marketing-oriented firm.
B) in a marketing-oriented firm, the total system's effort is guided by what individual departments would like to do.
C) production-oriented firms usually do not have a marketing manager.
D) in a marketing-oriented firm, every department's activities are guided by what customers need and what the firm can deliver at a profit.
E) all major decisions are based on extensive marketing research studies in marketing-oriented firms.