Which statement is false regarding the maintenance of GMDSS equipment at sea?

Correct Answer: Option A — The GMDSS maintainer may not be the person designated to have primary responsibility for radio-communications during Distress incidents even if licensed as an operator.

The GMDSS maintainer is a qualified technician responsible for equipment repair. There is no regulatory prohibition preventing a maintainer from also serving as a radio operator, provided they hold the necessary licenses. The statement claiming they cannot be the person responsible for distress communications is factually incorrect under GMDSS.