[ForSale-Swap] Antenna Resonance Question

[sx28 at juno.com]

Amazing.. some say it is A, others say it is C and another says it is
None of the Above.  So I added answer E just to make things interesting. 
 Come on guys get your old antenna engineering handbook out. According to
Websters New Collegiate Dictionary:
Resonance is caused by a relatively small periodic stimulus of the same
or nearly the same period at the natural vibration period of the system. 



An antenna is resonant when
a) it is 1/2 wavelength long
b) the source resistance is exactly zero ohms
c) the antenna is a center-fed dipole
d) the source reactance is exactly zero ohms Answer______________
e) none of the above

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