Match the following:
(P) Tuberculosis (1) Bacterial
(Q) Diphtheria (2) Viral
(R) Yellow fever (3) Toxoids
(S) Malaria (4) Protozoal
| List-I (Diseases) | List-II (Pathogen) |
| (A) Pneumonia | (I) Wuchereria bancrofti |
| (B) Typhoid | (II) Microsporum |
| (C) Ringworm | (III) Salmonella |
| (D) Elephantiasis | (IV) Haemophilus influenzae |
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?