Angus Is a Bus Driver for a Tour Bus Company

Angus is a bus driver for a tour bus company for the last 15 years and has an excellent driving record. Last year, Angus was on medical leave for 8 weeks due to a back injury that has left him in chronic pain. If Angus has an accident while driving one of the tour buses because of the effects of his prescription pain medication and if passengers are injured, the company might be liable for:

A) failure to conduct a thorough background check on Angus.
B) negligent hiring.
C) criminal negligence.
D) negligent retention.