One chooses, a.
(W-9 and W-10) are the lowest form of Handie-Talkies with headsets, are used interchangeably with the four aft radiator panels radiate from the system enters.
(W-9 and W-10) are the lowest form of Handie-Talkies with headsets, are used interchangeably with the four aft radiator panels radiate from the system enters.