Consider the figure shown below for three different cases:
Which of the following statement(s) is/are correct for surface level emissions, given the environmental temperature?

- Case P represents unstable atmosphere and results in higher dispersion of emissions.
- Case Q represents subsidence inversion and results in higher dispersion of emissions than Case P.
- Case Q represents elevated inversion and results in lower dispersion of emissions than Case P.
- Case R represents subsidence inversion and results in lower dispersion of emissions than Case P.