VHF-DSC transmissions are encoded and transmitted in what emission mode?

Correct Answer: Option D — None of the above

VHF DSC transmissions utilize frequency modulation with audio frequency-shift keying (G2B emission mode) on Channel 70 (156.525 MHz). Since H3E (single-sideband full carrier), F1B/J2B (narrow-band direct-printing), and A3E (double-sideband AM) are not used for VHF DSC, "None of the above" is correct.