Jon lives Bloemfontein and wishes to sell his car at a good price. He places an advert on his car on Gumtree. Tyrion, who lives in Cape Town, sees the advert for Jon's car, and wishes to buy the car. Tyrion calls Jon, and offers to buy his car R90 000. Jon says that he needs some time to consider his offer, and will get back to him in 24 hours. Tyrion says this is fine, but, as his cell phone is giving him problems, he asks that Jon emails him informing him of his decision to either reject or accept the offer. Tyrion gives Jon his e-mail address and Jon notes it down on a piece paper. After thinking about the offer, Jon comes to the conclusion that this is a good offer and he wishes to accept Tyrion's offer. He emails Tyrion accepting his offer, and Jon reads the email the next day. Which theory for the formation of a contract is applicable to the above set of facts?

• A.Expedition theory.
• B.Information theory.
• C.Reception theory.
• D.Reliance theory.