E9C12 - Amateur Extra Class

E9C12 : Which of the following describes an extended double Zepp antenna?
A An end-fed full-wave dipole antenna
B A center-fed 1.5-wavelength dipole antenna
C A center-fed 1.25-wavelength dipole antenna
D An end-fed 2-wavelength dipole antenna
Correct Answer: A center-fed 1.25-wavelength dipole antenna