1. Value of the wind profile exponent for the 'very unstable' atmosphere is smaller than the wind profile exponent for the 'neutral' atmosphere.
1. Downwind concentration of air pollutants due to an elevated point source will be inversely proportional to the wind speed.
1. Value of the wind profile exponent for the 'neutral' atmosphere is smaller than the wind profile exponent for the 'very unstable' atmosphere.
1. Downwind concentration of air pollutants due to an elevated point source will be directly proportional to the wind speed.

Select the correct option.

1. $\text{i}$ is False and $\text{ii}$ is True
2. $\text{i}$ is True and $\text{iv}$ is True
3. $\text{ii}$ is False and $\text{iii}$ is False
4. $\text{iii}$ is False and $\text{iv}$ is False