A) \[\nabla \times \overrightarrow{\nabla }=0\]
B) \[\nabla \times \overrightarrow{V}=1\]
C) \[{{\nabla }^{2}}\times \overrightarrow{\nabla }=1\]
D) \[(\overrightarrow{\nabla }.\nabla )\,\overrightarrow{\nabla }=\frac{\partial \,\overrightarrow{\nabla }}{\partial \,t}\]
Correct Answer: A
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