Which of the Following Should Be Part of Informed Consent

Which of the following should be part of informed consent for potential research participants?

A) Any foreseeable risks or discomforts that they might encounter.
B) Any benefits that they can reasonably expect to receive from participating in the research.
C) For intervention outcome studies, any appropriate alternative procedures or courses of treatment that might be advantageous to the participant.
D) all of the above.