Although Geraldine's Job Title at a Local Car Dealership Is

Although Geraldine's job title at a local car dealership is "sales director," in reality,all car deals must be approved by the dealership's owner.One day,Geraldine exceeded her authority and approved a sales contract when the owner was away.Why might the contract be binding on the dealership?

A) because she was acting with apparent authority
B) because she was an agent of necessity
C) because she is an employee of the car dealership
D) because she had actual authority