Luke, thanks for the explanation of the " C " option.
I suppose I would also pick " C ", in that case.
A very good point was made about the possible difference of strength in a male and a female too. Males generally tend to be stronger in physical strength than females (not always the case, but usually), so that might have a different impact on the ending saga as well and just how long a person might be able to " hold on " to someone or something.
That's a good point about yelling for help too. If there is anyone that might be around that is. It certainly would not hurt to try it, and it might be very beneficial and bring more assistance.
If there was no one around but me, of course I would not want to let anyone go and possibly fall to their death, but let's face it, it would be almost near to impossible for one person to lift two people with one clinging to each hand. That would be physically draining and risk worthy with possible injury to yourself. If you are injured or incapacitated, then the two people certainly don't have a prayer (not to mention your own self).
Since the two people are very close (they can each reach one of your hands), I think I would see if one person could somehow get ahold of the other person freeing up one of my hands so I could use both hands to pull at the same time and same weight than pulling two different targets. It might help, and it might not. The people being pulled up need to bear some of the weight and burden of saving themselves if possible, by perhaps clinging a bit to each other, clinging to any possible rock formation that may give them a lever, or any other situation that may be able to be used. It certainly would help if someone had a rope to use or anything like that also. Anything to buy a few more minutes so that rescue may be easier or accomplished somehow for everyone.