The Family of an Elderly Patient Diagnosed with Pulmonary Edema

The family of an elderly patient diagnosed with pulmonary edema asks the nurse what the diagnosis means. How should the nurse respond?

A) "It is too much fluid in the lungs."
B) "It is a narrowing of the coronary vessels that causes the heart to stop working correctly."
C) "It is a disorder that rarely affects individuals older than 60."
D) "It is caused by working too hard when one is younger."