Given $A =3 \hat{ i }+4 \hat{ j }$ and $B =6 \hat{ i }+8 \hat{ j }$, which of the following statement is correct?
- A$A \times B =0$
- B$\frac{| A |}{| B |}=\frac{1}{2}$
- C$(a)$ and $(b)$
- D$A \cdot| B |=48$
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