An ideal gas whose adiabatic exponent is `gamma` is expanded according to the relation `P=alpha V` . The molar specific heat of the process is (alpha is a positive constant)
(A) `(R)/(2)` `((gamma+1)/(gamma-1))`
(B)`((gamma+1)/(gamma-1))`R
(C)` R((gamma-1)/(gamma+1)) `

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