Answer:
B. is not liable because Mike was on a frolic of his own.
Explanation:
Mike who is a dispatch rider, decided to see his girlfriend, Jackie, who lived 50 miles off his pizza route. He had an accident while driving to his girlfriend's, and injured a pedestrian, Chuck due to his negligent driving.
Under the circumstances, Frank's Pizza isn't liable because Mike was on a frolic of his own. Mike embarking on a 50 mile drive to see his girlfriend is frolicsome and outside the scope of his employment as a delivery agent.
Hence, this will absolve his employer from any liability as he wasn't working on the designated route at the time.