Strategic planning: Select one. Select one: O a. should be an annual exercise. O b. should not be influenced by managerial institution. O c. should be done independently by company shareholders. O d. should be based on creativity. A marketing plan should: Select one: Select one: O a. be viewed inflexibly as a series of sequential steps. O b. be developed independently of the external business environment. c. define the business mission d. exclude budgets and pricing