Brill saved the life of Ace's wife, Mary, who thereafter changed her will to leave Brill $1,000. However, upon Mary's death she had no property except an undivided interest in real estate held in tenancy by the entirety of Ace. The property had been purchased by Ace from an inheritance. After Mary died, Ace signed and delivered to Brill the following instrument: "In consideration of Brill's saving my wife's life and his agreement to bring no claims against my estate based on her will, I hereby promise to pay Brill $1,000." Upon Ace's death, Brill filed a claim for $1,000. Ace's executor contested the claim on the ground that the instrument was not supported by sufficient consideration."In most states, would Brill's saving of Mary's life be regarded as sufficient consideration for Ace's promise?
Yes, because Ace was thereby morally obligated to Brill.  Yes, because Ace was thereby materially benefited.  No, because Ace had not asked Brill to save her.  No, because the value of Brill's act was too uncertain