A firm has the choice of offering "dirty" jobs that are likely to cause severe health problems for its workers or of offering "clean" jobs by installing safety equipment at acost of $5 per hour per employee that will substantially reduce the chances of health problems. The firm willA) install the safety equipment if workers can ascertain whether they are working a dirty or a clean job. B) never willingly choose to install the costly safety equipment. C) willingly install the safety equipment if workers are willing to be paid $7 per hour less in a clean job than in a dirty job.