If $(\vec{a} + 2\vec{b} + 3\vec{c} = 0)$, then $(\vec{a} \times \vec{b} + \vec{b} \times \vec{c} + \vec{c} \times \vec{a}) =$

Question

$6 (\vec{b} \times \vec{c})$

$2 (\vec{b} \times \vec{c})$

$3 (\vec{c} \times \vec{a})$

$\vec{0}$

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