Which of the following statement about microwave antennas is correct?
A . By polarization direction, antennas are classified as single-polarized antennas and dual-polarized antennas.
B . For a directly mounted antenna, an ODU can be directly mounted to the hybrid coupler.
C . A dual-polarized antenna cannot transmit and receive vertically polarized electromagnetic waves and horizontally polarized electromagnetic waves at the same time.
Answer: C