No applicant shall be examined for a license unless he shall be 21 years of age, of good moral character and shall give satisfactory evidence that he was or is:
A. 
Able to read and write the English language and is a citizen of the United States, either by birth, naturalization or by a parent's papers.
B. 
An employing electrical contractor who has had an established business for at least five years in the installation, alteration and repair of electrical wiring or equipment or whose experience as a journeyman electrician, as set forth in Subsection C, and as an employing contractor, totals at least five years; or
C. 
A journeyman electrician who has worked as a journeyman for at least five years on the physical installation, alteration and repair of electrical wiring and equipment; or
D. 
A graduate engineer of a college or university who holds at least a bachelor of science degree in electrical engineering and has, in addition, worked at least one year with his tools on installation, alteration and repair of electrical wiring and equipment.