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Consider the following statements : (1)          Joule-Thomson experiment is isoenthalpic as well as adiabatic. (2)          A negative value of \[{{\mu }_{JT}}\] (Joule Thomson coefficient corresponds to warming of a gas on expansion. (3)          The temperature at which neither cooling nor heating effect is observed is known as inversion temperature. Which of the above statements are correct

A)                 1 and 2 

B)                 1 and 3

C)                 2 and 3 

D)                 1, 2 and 3