Which Statements Are True Regarding an Adverse Drug Reactions (ADRs)

Which statements are true regarding an adverse drug reactions (ADRs) ? (Select all that apply.)

A) Adverse effects are ADRs that are usually predictable.
B) ADRs always result in harm to patients.
C) All ADRs are preventable if proper precautions are taken.
D) ADRs can be unexpected and unintended responses to medications.