E9H01 - Amateur Extra Class

E9H01 : When constructing a Beverage antenna, which of the following factors should be included in the design to achieve good performance at the desired frequency?
A Its overall length must not exceed 1/4 wavelength
B It must be mounted more than 1 wavelength above ground
C It should be configured as a four-sided loop
D It should be at least one wavelength long
Correct Answer: It should be at least one wavelength long