Which of the following statements about strategic and operating plans is CORRECT? O a. The corporate scope is a condensed version of the entire set of strategic plans. O b. A firm's corporate purpose states the general philosophy of the business and provides managers with specific operational objectives. O C. A firm's mission statement defines its lines of business and geographic area of operations. O d. Operating plans provide management with detailed implementation guidance, consistent with the corporate strategy, to help meet the corporate objectives. These operating plans can be developed for any time horizon, but many companies use a 5-year horizon. O e. Once a firm has defined its purpose, scope, and objectives, it must develop a detailed statement of corporate strategy or strategies for achieving its goals