Step 1: Understanding the Concept:
Order XXIII, Rule 1 of the CPC governs the withdrawal and abandonment of suits.
Step 2: Detailed Explanation:
- Statements I, II, and III are correct summaries of the law: A plaintiff can withdraw a suit (I), permission is required for a fresh suit on the same cause of action (II), and failing to obtain such permission bars a fresh suit (III).
- Statement IV is incorrect because the court has judicial discretion. Permission is not granted as a matter of right but is based on "sufficient grounds" or a "formal defect."
Step 3: Final Answer:
Statements I, II, and III are correct. Option (B) is the correct answer.