Which statement BEST describes why it is important for all health-care workers to be CPR/first aid certified?

Any health-care worker might be required to perform CPR or first aid if they are out of work and there is nobody else there who is trained.
Heath-care workers are held to a higher standard than the rest of the population, so they need to be prepared to handle an emergency.
At any time in the health-care setting, any health-care worker could be the first responder and need to initiate CPR or administer first aid.
If you know CPR and first aid, you are more likely to get a job in the emergency room.