यदि $\overrightarrow{a} \cdot \overrightarrow{b} = 1, \overrightarrow{b} \cdot \overrightarrow{c} = 2$ और $\overrightarrow{c} \cdot \overrightarrow{a} = 3$ है,तो $[\vec{a} \times(\vec{b} \times \vec{c}), \vec{b} \times(\vec{c} \times \vec{a}), \vec{c} \times(\vec{b} \times \vec{a})]$ का मान ज्ञात कीजिए।

• A
  $0$
• B
  $-6 \overrightarrow{a} \cdot(\overrightarrow{b} \times \overrightarrow{c})$
• C
  $12 \overrightarrow{c} \cdot(\overrightarrow{a} \times \overrightarrow{b})$
• D
  $-12 \vec{b} \cdot(\vec{c} \times \vec{a})$