Which of the Following Is the BEST Example of Management

Which of the following is the BEST example of management thinking during the "production era"?

A) "The more we advertise a product, the more we can sell."
B) "We need to increase our sales effort-to sell what we can produce."
C) "If we can produce it, customers will buy it."
D) "We need to be selective and produce what customers want."
E) "The lower we price a product, the more we can sell."