# Which of the following is NOT a valid operation in a Kyverno mutate rule?

Kyverno, Medium (Advanced), Mutation. https://k8wiz.com/uquiz/which-of-the-following-is-not-a-valid-operation-in-a-kyverno-mutate-rule

- A. add
- B. replace
- C. merge
- D. remove

**Answer:** merge

**Explanation:** patchesJson6902 in a mutate rule uses RFC 6902 JSON Patch, whose operations are add, remove, replace, move, copy and test. There is no merge operation; to merge fields, Kyverno offers patchStrategicMerge, which works like kubectl's strategic merge patches.