Let Φ be an arbitrary smooth real valued scalar function

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Let Φ be an arbitrary smooth real valued scalar function and V be an arbitrary smooth vector valued function in a three-dimensional space. Which one of the following is an identify?

1. Curl(Φ V) = ∇(ΦDivV)
2. DivV = 0
3. Div Curl V = 0
4. Div(Φ V) = ΦDiv V

Correct Option: C

Div Curl V = 0