Stan owns a cleaning service. his crews clean people's homes, mostly on a regular contract basis. typically teams of 2-3 cleaning people will clean a home either once a week or every-other-week. andrea applies for a job with stan's company. stan hires andrea based on her impressive resume. he does not check her references or do a background check. her first week on the job, andrea violently attacks a client while cleaning her home. the client is seriously injured. it turns out that andrea recently escaped from prison where she was serving a life sentence. stan

a. is liable because andrea was acting in the scope and course of her employment when she attacked the client.
b. is liable because he negligently hired andrea.
c. is not liable because andrea was not acting in the scope and course of her employment when she attacked the client.
d. is not liable because the attack was not reasonably foreseeable based on the information in andrea's resume.