[单选题]
A gas is quickly compressed v )uicts i47et :5d1pgin an isolated environmk -zeacs k )lia+lr--:rlz48 eent. During the event, the gas exchanged no heat with its surroundings. Thissl:+ kl)-4c8 zliekzrar e-a- process is
A. isothermal
B. isochoric
C. isobaric
D. adiabatic
