The core protection principle for OSC-provided assessment information (including PCI/CUI, assessment workpapers/notes, and the assessment results package ) is confidentiality / non-disclosure . The CMMC rules require assessors not to disclose OSC information outside the assessment participants, except as required by law. For example, CMMC assessor requirements include not sharing information about an OSC obtained during pre-assessment and assessment activities with anyone not involved in that specific assessment .

For retention, the authoritative requirement in the CMMC Program rule (32 CFR Part 170) is that assessment-related records are maintained for six (6) years , unless disposition is otherwise authorized by the CMMC PMO. This record set includes assessment materials and working papers generated during Level 2 certification assessments, and it also includes contractual agreements.

Important correction to the multiple-choice options: none of the answers list the official six-year retention period. The best available option is therefore B because it correctly captures the required confidentiality/non-disclosure principle—but the “ 3 years ” duration in the option does not match the official CMMC v2.0 retention requirement (which is 6 years ).

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