What isthe fundamental purpose for imposing radio silence?
A.
To ensure that interference to'proprietary communications is minimized.
B.
To ensure that only voice communicaOons can be effected on the distress frequency or channel.
C.
To ensure that a distressed vessel will have a"window" twice each hour for transmitting routine messages.
D.
To ensure that interference on a particular frequency or channel for communications con- cerning emergency traffic is minimized.