If $\vec{a}, \vec{b}, \vec{c}$ are vectors such that $|\vec{a} \vec{b} \vec{c}|=4$ then

If $\vec{a}, \vec{b}, \vec{c}$ are vectors such that $|\vec{a} \vec{b} \vec{c}|=4$ then

1. 16
2. 64
3. 4
4. 8

Asked in: JEE Main 2002

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