Read the cartoon and answer the following question:
In the cartoon the sentence “I think we’ve got enough information now, don’t you?” the “don’t you?” is a Tag Question. According to Oxford dictionaries, a tag question is “a question converted from a statement by an appended interrogative formula, e.g., it’s nice out, isn’t it?”
Source: http://oxforddictionaries.com/us/definition/americanenglish/tagquestion
Choose from the alternatives below, the tag question that uses an incorrect auxiliary verb form: