If it appears that the respondent in his/her answer, falsely and in bad faith, denies a material allegation of fact in the complaint or states that the respondent has no knowledge sufficient to form a belief, when he/she in fact possesses such information, or if it appears that the respondent has knowingly introduced false testimony during proceedings for his/her disqualification, the Director of Practice may thereupon file supplemental charges against the respondent. Such supplemental charges may be tried with other charges in the case, provided the respondent is given due notice thereof and is afforded an opportunity to prepare a defense thereto.