In an ideal air-conditioning cycle shown below, which of the following statement(s) is/are true in the segments P, Q, R, S?

Match the following terms in Group-I with their corresponding descriptions in Group-II.
| Group-I | Group-II |
|---|---|
| P - VAV | 1 - Continent-ocean heat balance system |
| Q - DEWAT | 2 - Public transportation system |
| R - El-Nino | 3 - Intelligent air conditioning system of building |
| S - BRTS | 4 - Water supply monitoring system |
| 5 - Waste water treatment system |
