A Client Is Scheduled Receive a Parenteral Dose of Magnesium

A client is scheduled receive a parenteral dose of magnesium sulfate.The nurse tests patellar reflexes and determines them to be absent.Which action by the nurse is the most appropriate?

A) Administer the drug as ordered,as this is a normal finding.
B) Hold the medication for 1 hour,then reassess.
C) Hold the medication and notify the health care provider.
D) Administer the drug after placing the client on a cardiac monitor.