E9C06:What is the effect of adding a terminating resistor to a rhombic or long-wire antenna?
Direct answer summary (2024-2028 NCVEC pool)
The official correct answer for E9C06 is It changes the radiation pattern from bidirectional to unidirectional.
The key fact is It changes the radiation pattern from bidirectional to unidirectional. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.