The Physician Has Ordered Dantrolene (Dantrium) for a Client

The physician has ordered dantrolene (Dantrium) for a client. What is a priority assessment by the nurse prior to administering this medication?

A) Does the client have gastric ulcer disease?
B) Does the client have gallbladder disease?
C) Is the client pregnant or lactating?
D) Does the client have cardiovascular disease?