Jeepers even if you don't believe in Heaven and Hell, it's got to be A.
If it's true and you go to heaven it's for eternity ( it's an extremely long time for those that dont what eternity means) compared to 15 yrs at a stretch left in her, and the money yes that would be nice for what ever time you have left and I'm sure you'd find an alternative to C with that sort of cash, but the risk reward is off the scale for A.