Procter & Gamble sells six brands of laundry detergent in North America, each designed for one of six laundry type segments Procter & Gamble has identified. Together, these six brands take four times the market share of Procter & Gamble's nearest competitor. Which of the following is a disadvantage of Procter & Gamble's differentiated marketing strategy?

A) lost sales that would have been made with an undifferentiated marketing strategy across all segments

B) lost customer loyalty due to lack of brand loyalty

C) increased costs for separate marketing plans for each brand

D) other suppliers controlling pricing

E) lack of resources to succeed in an attractive segment