Broadnorf Warbeagle is specifically designated to receive cash benefits of $2,000 from Ferd under a contract solely between Cantwell and Ferd. Cantwell owes Broadnorf $4,000. Ferd had never heard of Broadnorf before his recent contract with Cantwell. ​ The fact situation suggests the existence of​ Select one:
a. ​third-party rights and a delegation of duties.
b. ​an accord and satisfaction.
c. ​a substantial performance of a liquidated damage clause.
d. ​a statutory mutual assent.