An applicant who has attained the age of 25 years and is a high school graduate may be admitted to a campus as an adult student (1) if the applicant was not enrolled as a full-time student for more than one academic term within the previous five years and (2) if for any college work completed during that five-year period the applicant received a “C” average (2.0) or better and (3) if the applicant's motivation, preparation, and ability are such that in the judgment of the appropriate campus authority the probability of academic success is equivalent to that of students eligible under Section 40803 and (4) if the applicant demonstrates competence in entry-level skills as defined in Section 40402.1.