Based on the search results, the following conclusions can be drawn about the statements: I. An Ordinance can amend any Central Act: Ordinances in India have the same effect as an Act of Parliament and can amend existing laws, including Central Acts, as long as they do not violate the Constitution's basic structure. II. An Ordinance can abridge a Fundamental Right: An ordinance is subject to the same constitutional limitations as an Act of Parliament. Therefore, it cannot abridge or take away any of the fundamental rights guaranteed by the Constitution. III. An Ordinance can come into effect from a back date: Ordinances, like any other legislation, can be retrospective, meaning they can come into force from a back date. Therefore, statements I and III are correct, but statement II is incorrect. Hence, the correct option is 1: I and II only.