Many Large, Packaged Goods Marketers Like Procter & Gamble, Kraft

Many large, packaged goods marketers like Procter & Gamble, Kraft, and Pillsbury have used the product manager (or brand manager) system of marketing organization and implementation. Which of the following is the key advantage of this system?

A) Product managers have direct responsibility for research and development of new products.
B) Product managers can assume profit-and-loss responsibility for the performance of the product line.
C) Product managers are short-term in their orientation.
D) Product managers have major responsibilities and relatively little authority.