An ideal gas undergoes a reversible isothermal expansion from state \( \text{I} \) to state \( \text{II} \) followed by a reversible adiabatic expansion from state \( \text{II} \) to state \( \text{III} \). The correct plot(s) representing the changes from state \( \text{I} \) to state \( \text{III} \) is(are): \( (p : \text{pressure}, \; V : \text{volume}, \; T : \text{temperature}, \; H : \text{enthalpy}, \; S : \text{entropy}) \)
