The Nurse Is Providing Care for a Client with a History

The nurse is providing care for a client with a history of cardiac problems.The nurse notes the client's potassium level is 3.6 mEq/L.The nurse understands that which reason supports the physician's order for a daily dose of potassium?

A) The potassium is ordered to prevent the client from becoming hypokalemic.
B) The physician is attempting to increase urinary output to decrease cardiac stress.
C) The potassium is ordered in an attempt to prevent cardiac arrhythmias.
D) The client's cardiac diet is deficient in foods with high potassium levels.