\Paolho and Roth agree that Paolho will fix Roth's boat dock in exchange for $5,000. Paolho spends half of the amount due under the contract to acquire the materials for the job from Sav-U Economy Lumber. Sav-U isa. ​a delegatee.b. ​an assignor.c. ​an incidental beneficiary.d. ​an intended beneficiary.