Comprehensive and Detailed Explanation:

The CMMC framework allows separate scopes for FCI (Level 1) and CUI (Level 2). Level 2 certification applies only to environments handling CUI, as it requires all 110 practices, whereas Level 1 (17 practices) suffices for FCI alone. The OSC’s CUI scope qualifies for Level 2, while the FCI scope aligns with Level 1 (or a self-assessment). Option C is incorrect, as Level 2 doesn’t apply to FCI-only scopes. Option D lacks evidence of Level 1 non-compliance. B is correct per the scoping guide.