You Respond to a Farm for a Possible Snake Bite

You respond to a farm for a possible snake bite.You find a 36-year-old male patient seated against a tree.Bystanders state the patient was bitten on the arm by a rattlesnake and is "really sick." As you approach,you notice that the patient appears in obvious distress,diaphoretic,and holding his right wrist.Which of the following is your highest priority?

A) Perform a primary assessment and identify any potential life threats.
B) Confirm the type of snake and contact medical control for specific instructions.
C) Immediately apply a constricting band to minimize the spread of the venom.
D) Confirm the location and status of the snake.