A registrant is excluded from Class 4-D when his claim clearly shows that:

(a) He is not a regular minister or a duly ordained minister; or

(b) He is a duly ordained minister of religion in accordance with the ceremonial rite or discipline of a church, religious sect or organization, but who does not regularly as his bona fide vocation, teach and preach the principles of religion and administer the ordinances of public worship, as embodied in the creed or principles of his church, sect, or organization; or

(c) He is a regular minister of religion, but does not regularly, as his bona fide vocation, teach and preach the principles of religion; or

(d) He is not recognized by the church, sect, or organization as a regular minister of religion; or

(e) He is a duly ordained minister of religion but does not administer the ordinances of public worship, as embodied in the creed of his church, sect, or organization.