A CoDevelops Land

A Co.develops land.From time to time,it has used B,an independent contractor,as its agent to help it buy land.In fact,A Co.even lets B keep an office in its head offices,and on occasion C,a third party,has seen B's office when he has had meetings at A Co.If B enters into an agreement of purchase and sale on behalf of A Co.to purchase C's land

A) there will be no agreement because B does not have the necessary authority.
B) there will be no agreement because A Co.did not ratify the contract.
C) there will be an agreement because B had express authority to enter into it.
D) there will be an agreement between A Co.and C because A Co.is estopped from arguing that B did not have the authority to enter into it.
E) none of the above