Column-II gives certain systems undergoing a process. Column-I suggests changes in some of the parameters related to the system. Match the statements in Column-I to the appropriate process (es) from Column-II.

• A

  (A) q,t, (B) r, (C) t, (D) r
• Correct answer
  B

  (A) p,q,s,t, (B) q, (C) s, (D) s
• C

  (A) p,s, (B) r, (C) s, (D) r
• D

  (A) p,q,s,t, (B) q, (C) t, (D) s

Hence, the correct answer is option: 'B'.