Find the equation between the two parallel lines l1 and l2 whose equations is given below. ( vec{r}=3 hat{i}+2 hat{j}- hat{k}+ (3 hat{i}-2 hat{j}+ hat{k}) )

• A. n ( vec{r}=2 hat{i}- hat{j}+ hat{k}+ (3 hat{i}-2 hat{j}+ hat{k}) )
• B. ( sqrt{ frac{172}{14}} )
• C. ( sqrt{ frac{145}{14}} )
• D. ( sqrt{ frac{171}{14}} )
• E. ( sqrt{ frac{171}{134}} )