A, B and C are partners of an unregistered firm. D owns this firm ` 1000 on a contract. The firm filed a suit against D the suit is dismissed for non-registration of the firm. The firm is registered later on. In this case which one of the following statements is MOST appropriate.

• A. The firm can successfully bring the suit against D
• B. Registration must have been effected by the firm, before a suit is filed in the court
• C. The firm cannot file suit against D
• D. None of the above