Which of the Following Best Describes the Amount of Job

Which of the following best describes the amount of job safety?

A) Firms have no incentive to provide a safe environment,so there is too little safety
B) Only unionized firms can negotiate for a safe environment,so they have safe jobs while nonunion workers must work in unsafe environments
C) Firms have some incentive to provide safety,but imperfect information and labor immobility cause safety to be over-provided
D) Firms have some incentive to provide safety,but imperfect information and labor immobility cause safety to be under-provided