Please tell me which one is the correct answer

30. Mr. Z is the leading chef of a restaurant. One day he told his manager that the bread they had available was stale and could cause health issue if served to the customers. But the manager disregarded his warning and decided to serve customers the stale bread still. What would you think about the decision made by the MANAGER? * a. It's a good business decision. b. There is no legal or ethical concern, but it's a bad business decision because it may hurt the restaurant's reputation. c. It's is legal, but probably not ethical. O d. It's illegal and unethical