This is consistent with IAM guidance because, in a large and diverse infrastructure organization, asset management planning typically needs both:
an overarching strategic plan that sets the organization-wide asset management direction and objectives; and
more detailed asset- or asset-class-specific plans that translate that direction into actionable lifecycle, performance, risk, and investment plans for different asset types.
The IAM Anatomy of Asset Management Version 4 explains that the Strategic Asset Management Plan (SAMP) specifies the organization’s long-term and life-cycle approach to managing assets, including the asset management strategy and asset management objectives . It also makes clear that the resulting planning framework can exist as a structured group of documents , rather than a single document only.
This is exactly why options A , B , and C are too absolute. IAM does not say there must only be one plan, nor that there should only be separate asset-type plans without an overarching framework. The point is alignment through the line of sight : organizational objectives flow into asset management strategy and then into the relevant plans for different asset groups.
Option D is incorrect because the number and type of plans do matter for governance, clarity, and alignment; it is not sufficient merely to focus on maintenance of critical asset groups. IAM planning covers much more than maintenance alone, including lifecycle decisions, performance, risk, and investment planning.