[Joker_vD]

The context can also be very important. For instance: In case A, you have $50, and are offered to bet them against a fair coin flip, if you guess right you win another $50, if you guess wrong you lose your $50; in this case the most rational choice would be to refuse to play the game. In case B, you have $50, and are offered to bet them against a fair coin flip, if you guess right you win another $50, if you guess wrong you lose your $50; in this case the most rational choice would be to agree to play this game.

The missing context is that in case A, you need in 10 minutes to repay $50 debt to the Sicilian mafia, or else they'll kill you to make an example for others, and you have no other assets or other ways to make money in this short time. In case B, the situation is the same, but you owe $100 instead of $50.