Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): With the increase in the pressure of an ideal gas, the volume falls off more rapidly in an isothermal process in comparison to the adiabatic process. Reason (R): In isothermal process, $\mathrm{PV}=$ constant, while in adiabatic process $\mathrm{PV}^{\gamma}=$ constant. Here $\gamma$ is the ratio of specific heats, P is the pressure and V is the volume of the ideal gas.
In the light of the above statements, choose the correct answer from the options given below:
Select the correct option:
A
(A) is false but (R) is true
B
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
C
(A) is true but (R) is false
D
Both (A) and (R) are true and (R) is the correct explanation of (A)
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