All of the following are true except: O a. Managerial accounting is concerned with providing information to managers for use within the organization O b. Planning, controlling, and decision making are the three main activities of financial accounting. Oc. C. Financial accounting serves the needs of those outside the organization, whereas managerial accounting serves the needs of managers employed inside the organization. d. Financial accounting is concerned with reporting financial information to external parties, such as stockholders, creditors, and regulators