The correct option is C Option B or C
The correct answer is Option D which says both 'I' and 'We', as both of them can be used to complete the above sentence. 'I' and 'We' are subjective pronouns. A Pronoun is a word or phrase used in place of a noun. From the sentence, it is not clear if it refers to a single person or to a group. Hence, 'I' or 'we' both can be correct as per the context. We must use the subjective case, when the pronoun following 'than' or 'as' has a verb completing the sentence, after the pronoun. In the above sentence, the verb 'do' follows the pronoun 'than'. Thereby, Subjective case should be used. In case, there is no verb following the pronoun, we must use the objective case. Option A, me is an Objective pronoun and is incorrect in this case.