(a) An exemption under this subchapter does not apply to any amount of additional tuition the institution elects to charge a resident undergraduate student due to excess undergraduate hours as specified in Texas Education Code, §54.014(a) or (f).(b) An exemption under this subchapter does not apply to any amount of additional tuition the institution charges a graduate student because the student has a number of semester credit hours of doctoral work in excess of the applicable number provided by Texas Education Code, §61.059(1) or (2).(c) Unless granted a hardship exception under §21.792 of this title (relating to Hardship Provisions) an undergraduate student applying for a continuation exemption in fall 2014 or later and who has completed as of the beginning of the semester or term a number of semester credit hours that is considered to be excessive under Texas Education Code, §54.014, may not receive the exemption under this subchapter.