Bernice is conducting a study on how homelessness affects mental disorders. Her study was conducted with no errors and the research would be clearly helpful to many people. During the study, Bernice appeared repulsed by her subjects and wore gloves and a face mask when interacting directly with them. Which of the following principles of psychology or codes of conduct did Bernice violate? A. Beneficence and Nonmaleficence B. Fidelity and Responsibility C. Respect for Peoples Rights and Dignity D. Competence