Which of the following HF amateur bands include allocations for space stations?

Объяснение

Space station allocations at HF are partly whole bands and partly segments: 7.0-7.1 MHz on 40 meters and 14.00-14.25 MHz on 20 meters, together with the 17, 15, 12 and 10 meter bands. The listed answer names four of those and is the only choice that stays inside the allocation, since 30 meters is not authorized and satellite operation is not permitted on all HF bands.