Which of the following persons may not be issued any type of driver's license in the State of Texas?

a. a person who is under the age of 15 yrs.
b. Any person, as a class A or class B driver, who is under 21 yrs of age unless he has completed the approved training program
c. A person with a class C license who will be operating a two-axle vehicle with a gross weight that does not exceed 26,000 pounds.
d. None of the above responses to the question since all of the above may be issued a drivers license.