A sample of laptops is being selected to ensure AV software has been properly installed/configured.

When testing implementation, the population must include the full set of in-scope assets, not just a subset filtered by existing controls.

AV console (A) → only shows devices with AV installed; it would exclude noncompliant assets.

IT asset inventory (C) → provides the complete list of laptops, making it the proper source for random sample selection.

Risk register (D) → lists risks, not devices.

Capital assets only (B) → not comprehensive for all laptops.

Extract Reference (HITRUST Assessment Sampling Guidance, CCSFP [0173]):

Sampling must be based on the complete population from the IT asset inventory; reliance on control-based systems (e.g., AV console) introduces bias.