Questão de Língua Inglesa

Analyze the statements about the sentence “Wicked seems to have acquired its “good” side more recently than did bad.” (l. 18). I. “More recently than” is a superlative structure with an adverb. II. If “more recently than” were substituted by “not as recently as,” without altering the order of any other word in the sentence, there would be no changes in meaning. III. If “than did bad” were removed from the sentence, it would still be grammatically correct. Which statements are correct?