The Nurse Is Caring for a Client with Exposure to an Unknown

The nurse is caring for a client with exposure to an unknown chemical agent. The client asks, "Why can't a lab test be done to determine which agent I was exposed to?" What is the nurse's best response?

A) "There is no way to determine exactly which test to run."
B) "Obtaining results from a lab test would take longer than treatment would."
C) "There are no lab tests available to identify the chemical."
D) "It is more important to understand the type of injury you have."