When a rainstorm erupts outside Rita's Souvenir & Gift Shop, Rita and Shaw enter into an implied contract to split the revenue from Shaw's sale of umbrellas to Rita's customers. The terms of this contract are defined by____________.

a. the conduct of the parties.

b. the words of the parties.

c. the unforeseeable storm that gave rise to the deal.

d. the unexpressed subjective intent of the parties.