19. In the following linguistic explanations which is NOT true? (A) The prefixes un- and dis- can form the opposites of verbs, e.g., tie/untie, appear/disappear, agree/disagree, fold/unfold. (B) The prefixes in- (and its variations) always have a negative meaning, e.g., impatient, illegal, internal, import, insert, income. (C) Many words in English are formed from Latin roots, e.g., respect, suspect (spect-see)； transport, support (port-carry). (D) Drinkable and edible are adjectives because of their suffixes, and modernize and industrialize are verbs because of their suffixes.