Which of the following statements about the 'French Revolution' are correct? (i) After the end of the French Revolution it was proclaimed that it was the people who would henceforth constitute the nation and shape its destiny. (ii) France will have a constitutional monarchy and the new republic will be headed by a member of the royal family. (iii) A centralised administrative system will be put in place to formulate uniform laws for all citizens. (iv) Imposition of internal custom duties and dues will continue to exist in France.