Peter Borrowed Carl's Car,as His Own Car Had Broken Down,and

Peter borrowed Carl's car,as his own car had broken down,and he needed to go to the city,urgently.Carl,a close friend of Peter,did not charge any fee from Peter for using the car.What kind of agreement existed between Peter and Carl over the car?

A) bailment for the sole benefit of the bailor
B) bailment for the sole benefit of the bailee
C) bailment for the partial benefit of the bailor
D) mutual benefit bailment