Which of the following factors affect distribution of population?
l. Climate
II. Soil
Ill. Topography
IV. Water
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?