单选题When the changing of a VHF channel / frequency is accepted，say（）.AI am going to change to VHF channelBI am certainly going to change to VHF channelCChanging to VHF channelDVHF channel. has been changed
单选题
When the changing of a VHF channel / frequency is accepted，say（）.
A
I am going to change to VHF channel
B
I am certainly going to change to VHF channel
C
Changing to VHF channel
D
VHF channel. has been changed
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