What are the essential requisites of res judicata (double jeopardy) in civil cases?

• A. Final judgment; jurisdiction; on the merits; identity of parties, subject matter, and causes of action.
• B. Final judgment; identity of witnesses; jurisdiction; identity of remedies.
• C. Final judgment; service of process; identity of parties; casual connection.
• D. Final judgment; res ipsa loquitur; identity of courts.

Answer: (A)