This is a rotten question .... it’s all about life rafts/survival equipment actually (which is a bit of a random leap ... )

On overwater flights, an operator shall not operate an aeroplane at a distance away from land, which is suitable for making an emergency landing, greater than that corresponding to:

1. 120 minutes at cruising speed or 400 nautical miles, whichever is the lesser, for aeroplanes capable of continuing the flight to an aerodrome with the critical power unit(s) becoming inoperative at any point along the route or
planned diversions; or
2. 30 minutes at cruising speed or 100 nautical miles, whichever is the lesser, for all other aeroplanes, ..... unless the equipment specified in subparagraphs (b) and (c) below is carried.

The equipment is life rafts/ELTs/Survival ...

So for this question we are assuming quite a bit ... but the answer option is the only possible one!!!!!!