Question id 74 - Flight Planning and Monitoring - ATPL - Airline Transport Pilot license

Diversion to a nearby alternate is not necessary, because it is allowed to calculate without reserve fuel.
Diversion to a nearby alternate is not necessary, because the reserve fuel has not been used completely.
Diversion to a nearby alternate is necessary, unless the captain decides to continue on his own responsibility.
Diversion to a nearby alternate is necessary, because the remaining fuel is not sufficient.