Which of the Steps in the Marketing Planning Process Listed

Which of the steps in the marketing planning process listed below follows the others?

A) Assess consumer needs and wants relative to the product, segment the market into groups that are likely to respond, and target specific markets.
B) Set objectives for the marketing effort.
C) Research the consumer market and the competitive marketplace and develop a situation analysis.
D) Differentiate and position the product relative to the competition.
E) Develop the marketing mix strategy.