E9H06 - Amateur Extra Class

E9H06 : What indicates the correct value of terminating resistance for a Beverage antenna?
A Maximum feed point DC resistance at the center of the desired frequency range
B Minimum low-angle front-to-back ratio at the design frequency
C Maximum DC current in the terminating resistor
D Minimum variation in SWR over the desired frequency range
Correct Answer: Minimum variation in SWR over the desired frequency range