Danielle owns a company, justin is not Danielle's agent but just an interesting talk contract on Daniels behalf with Nicole, the owner of a trucking company. When Danielle later find out, Danielle contact Nicole to approve the contract this is an example of

A. An agency of agreement

B. an agency of estoppel

C. an agency of ratification

D. Not a valid contract, because there is no creation of agency relationship