The principle of informed consent means that after making a diagnosis and treatment plan for a patient, the clinician must provide the patient with true and sufficient information including diagnostic conclusions, treatment decisions, condition prognosis, and cost of diagnosis and treatment, especially the nature and role of the diagnosis and treatment plan. Basis, damage, risk, unpredictable accidents, and other alternative treatment options and their pros and cons, make patients or family members make their own choices after careful consideration, and express their willingness and acceptance of such treatment options in a corresponding way. Commitment; only after the patient has made a clear commitment can the diagnosis and treatment plan confirmed by him be finalized and implemented. According to the above definitions, Which of the following violate the principle of informed consent:. ['The doctor explained the role, risk, prognosis and cost of bone marrow transplantation to the family members of children with leukemia. After discussion, the family members decided to sign the consent form.', 'The doctor explained to the patient the two treatment options that the patient can currently choose, but the patient and the family member did not understand because of the low education level, so the doctor made the decision for them.', 'Before a patient performs a test, the doctor informs the patient about the usefulness of the test and the possible risks. The patient is clear, but he is very concerned about whether the cost of the test is reimbursed. When he knows that the test is at his own expense, he refuses the test.', "Before chemotherapy for a patient, the doctor provided two alternatives, one was a good but expensive imported medicine, and the other was a less effective but cheap domestic medicine. The family members and the patients had different opinions. Ask the doctor to help them get the idea. Under the patient's patient explanation, the patient and the family finally reached a consensus."]