An ideal gas in thermally insulated vessel at internal `(pressure)=P_(1), (volume)=V_(1)` and absolute `temperature = T_(1)` expands irreversiby against zero external, pressure , as shown in the diagram,
The final internal pressure, volume and absolute temperature of the gas are `p_(2), V_(2) and T_(2)`, respectively . For this expansion
A. `q = 0`
B. `T_(2) = T_(1)`
C. `p_(2)V_(2) = p_(1)V_(1)`
D. `p_(2)V_(2)^(gamma) = p_(1)V_(1)^(gamma)`
