Final answer:
The statement acknowledging that (b) a secure information system may still contain inherent risks due to management's cost-benefit analysis trade-offs is true. Internal controls must weigh security against reasonableness of costs, and corporate culture is significant in enforcing these controls.
Step-by-step explanation:
This acknowledges that while security is crucial, there are always inherent risks in any system; these are sometimes accepted because the cost of mitigating these risks may outweigh the benefits.
The effectiveness of internal control systems involves evaluating these trade-offs to achieve the most secure system within reasonable costs. A strong internal control framework addresses a broad range of objectives beyond just output distribution issues, and corporate culture plays a significant role in how those objectives are implemented and enforced.