A private detective locates a fugitive and arranges for his arrest. The authorities later drop charges in exchange for the suspect's testimony, and the detective is not paid the reward because the fugitive was not convicted. Will the detective prevail in a contract action?

• A. Yes, because the authorities themselves prevented the conviction, satisfying the prevention doctrine.
• B. No, because a conviction is required to earn the award.
• C. No, because a reward is not payable unless a conviction occurs.
• D. Yes, because the doctrine of prevention excuses the nonoccurrence.

Answer: (A)