You're a scientist-type on a mission to Mars. There's 5 of you aboard the ship and you're descending upon the planet, when something goes wrong and the ship crashes. Everybody's ok and NASA will send a rescue mission, but it will take like a year. Due to damages, there will not be enough oxygen for 5 people for 12 months. The most that can be substained for a year are 2 people. You're an essential crew member and can keep the ship operational, so you're inexpendable. So, that being said, which of these scenarios agrees with you best?
Same scenario as above, except you're the pilot of the broken ship and very expendable. What solution would you be ok with?