When Hester's Car Breaks Down,she Asks Insta-Tow,Inc

Multiple Choice

When Hester's car breaks down,she asks Insta-Tow,Inc.,to tow it to Jerry's Repair Shop.There is no discussion of a price,and Hester and Insta-Tow do not sign any documents.Later,Insta-Tow sends Hester a bill.With respect to Hester's obligation to pay the bill,this is

A) an express contract.
B) an implied contract.
C) no contract.
D) a quasi contract.