On August 1, Geriatrics, Inc., operating a "lifetime care" home for the elderly, admitted Ohlster, who was 84 years old, for a trial period of two months. On September 25, Ohlster and Geriatrics entered into a written lifetime care contract with an effective commencement date of October 1. The full contract price was $20,000, which, as required by the terms of the contract, Ohlster prepaid to Geriatrics on September 25. Ohlster died of a heart attack on October 2. In a restitutionary action, can the administratrix of Ohlster's estate, a surviving sister, recover on behalf of the estate either all or part of the $20,000 paid to Geriatrics on September 25? 
Yes, because Geriatrics would otherwise be unjustly enriched at Ohlster's expense.  Yes, under the doctrine of frustration of purpose.  No, because Ohlster's life span and the duration of Geriatrics' commitment to him was a risk assumed by both parties.  No, but only if Geriatrics can show that between September 25 and Ohlster's death it rejected, because of its commitment to Ohlster, an application for lifetime care from another elderly perso