Cyclosporin – A: Produced by Monascus purpureus and used as an immunosuppressant.
Statins: Derived from Trichoderma polysporum, these lower blood cholesterol.
Streptokinase: Obtained from Streptococcus, used to remove blood clots.
Penicillin: Produced by Penicillium notatum, an antibiotic effective against bacterial infections.
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?