Identify the type of code used by a trading company Ms. Ahana Ltd.:
| Codes | Accounts |
| CA005 | Super Ltd. |
| CA006 | Regina Ltd. |
| CA007 | Nasir & Sons Ltd. |
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?