The correct answers are C and D. Identification and reconciliation rules are essential because they control how incoming CI data is matched to existing records and how updates from different sources are reconciled. This prevents duplicate CIs and ensures that authoritative sources update the correct attributes. CI Class Manager is also required because it provides governance over CI class structure, attributes, and inheritance. Standardized CI classes prevent each source from classifying the same real-world object differently. Option A is the cause of the problem, not the solution. Option B introduces avoidable technical debt because custom scripts are harder to govern, maintain, and upgrade. A Data Foundations-aligned solution uses standard class governance plus IRE rules to enforce consistency across all sources.

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