Answer:
d. be prepared in generally accepted accounting principles
Explanation:
Management accounting reports are performance reports, cost accounting reports and budget reports.
Management accounting is aimed at reducing cost per unit and providing such cost related data to the management which helps the management in controls and decision making process.
The focus of such accounting is on providing data to internal users of an organization such as top management, employees etc.
Management accounting reports need not comply with generally accepted accounting principles. Those are necessary for financial reporting and financial accounting.