Question: Which of the following is an example of ethical behavior? Dr. Williams charges his wealthier patients higher fees, knowing they can afford them. Dr. Bellingham refuses to treat a patient who has been infected with hepatitis B. Dr. Nguyen reports gross or continual poor treatment by other dentists to the appropriate governing agencies. • D) Dr. McDonald suggests a patient have all his amalgam restorations removed for the purpose of removing toxic substances from his body, even though the patient's not allergic to amalgam.