Which of the following statements describing Alberta's Occupational Health and Safety Act is TRUE? Select one: a. Unions are responsible for training their members about the hazards present in a worksite. b. The duty to report workplace injuries arises once a worker is admitted to a hospital for care. c. Once an employer employs 50 or more workers, it must put a Joint Work Site Health and Safety Committee in place. d. The Act requires a worker-appointed representative to act as the Chair of any Joint Work Site Health and Safety Committee