\[ \begin{array}{|l|r|r|} \hline \textbf{Particulars} & \textbf{\% of Revenue (2022--23)} & \textbf{\% of Revenue (2021--22)} \\ \hline \text{Revenue from operations} & 100.00\% & 100.00\% \\ \text{Purchase of stock in trade} & 10.00\% & 10.00\% \\ \text{Other expenses} & 1.00\% & 1.00\% \\ \text{Profit before tax} & 89.00\% & 89.00\% \\ \text{Tax (50\%)} & 44.50\% & 44.50\% \\ \text{Profit after tax} & 44.50\% & 44.50\% \\ \hline \end{array} \]
If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?