Which statement concerning exposure to radiation is TRUE?

A
The INMARSAT unit's radome filters out potentially dangerous UV rays.
B
Certain INMARSAT systems will automatically transmit when called and can expose an individual to harmful radiation.
C
INMARSAT-A antennas are safe because they are omnidirectional.
D
An INMARSAT-C antenna must be carefully avoided because it focuses the transmitter's signal into a fine beam of energy.
E