Mo Owns a Business That Makes Kites

Mo owns a business that makes kites.Mo's agent Baez entered into an agreement with Val to purchase some land for a new kite factory.Mo's agency relationship with Baez was not memorialized by any writing.The day after Baez signs the papers finalizing the sale,Mo learned of the purchase,was furious with Baez,and wanted out of the deal.Assuming that Baez was legally considered the agent of Mo in making the purchase,which of the following is Mo's best argument?

A) That the agency agreement with Baez was not in writing and that under the equal dignities rule Mo should not be bound.
B) That agency agreements may not extend to the purchase of land.
C) That under the exclusion principle,Baez was not authorized to purchase land unless expressly authorized by Mo.
D) That Mo did not need land and therefore should not be bound because Baez was mistaken.