Find the area of the parallelogram whose adjacent sides are $\overrightarrow{a}= \hat i+ 2 \hat j +3 \hat k$ and $\overrightarrow{b}= 3 \hat i - 2 \hat j + \hat k$

Question

$\begin{array}{1 1} 8 \sqrt 3\;sq.unit \\ 5 \sqrt 3\;sq.unit \\ 4 \sqrt 5\;sq.unit \\ 2 \sqrt 3\;sq.unit \end{array}$