(c) Name a species of mosquito other than female Anopheles and the disease, for which it carries the pathogen.
- Mosquito: Aedes aegypti.
- Disease: Dengue or Zika virus.
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?