Which is not a requirement of a good policy?

COBIT 5 lists several characteristics of good policies, including being effective, efficient, and non-intrusive. These attributes apply to an individual policy. The characteristic "limited in number" applies to the entire set of policies within the enterprise's policy framework, not to a single policy. A single policy cannot be "limited in number" by itself. Therefore, this is a requirement for a good policy framework, but not a direct requirement of a good policy.

A. A good policy must be effective, meaning it successfully achieves its stated purpose. This is a core requirement.
B. A good policy must be efficient, meaning it achieves its objective without creating unnecessary administrative or operational burden.
C. A good policy must be non-intrusive, meaning it should not unduly hinder the business processes it is meant to guide.

ISACA, COBIT 5: A Business Framework for the Governance and Management of Enterprise IT, 2012, page 37, Figure 18. The figure lists "Limited in number" as a characteristic of the overall set of principles and policies.