Mr. Landowner is considering building a building on a piece of property he owns in a development site.He invites Mr. Contractor to his property to discuss ideas for a foundation for the building.Mr. Contractor advises that he would need to bring several loads of gravel to the site to properly grade it, and it would cost close to $15,000.Mr. Landowner simply responds "OK thank you."Believing he has a contract, Mr. Contractor returns the next day with a load of gravel and begins work.Mr. Landowner drives by and sees Contractor performing but does not stop or say anything to Contractor.He believes he does not have a contract and if dummy Contractor wants to improve his land for him, good for me and too bad for Contractor.When Contractor finishes and sends a bill to Landowner for $12,000, Landowner refuses to pay.

What type of contract, if any, as well aswhat theory of contract formation mightContractor argue to a court in seeking payment of his bill