The question tests factual recall about the dates associated with the Citizenship (Amendment) Act, 2019, and its subsequent rules. The key point is to accurately recall the notification date of the Act, its commencement date, and the notification date of the Rules. However, the question contains factual inaccuracies in the dates provided for statements (ii) and (iii). Assuming the provided answer C is correct, it implies a specific, possibly erroneous, set of facts was intended by the question setter.