A firm's strategy is set into action through plans and programs that consist of the marketing mix. The marketing mix is referred to as the four Ps of marketing. Which of the following are the four Ps?
A. Product, place, promotion, people
B. Product, price, promotion, and people
C. Product, packaging, price, promotion
D. Product, price, place, promotion
E. Product, price, place, people
Answer: D. Product, price, place, promotion