Which of the following is true in the case of an adiabatic process , where $ \gamma=Cp/Cv?$

Question

\[\begin {array} {1 1} (1)\;P^{1-\gamma}T^{\gamma}=constant & \quad (2)\; P^{\gamma}T^{1-;\gamma}=constant\\ (3)\;PT^{\gamma}=constant & \quad (4)\;P^{\gamma}T =constant \end {array}\]