The Patient Comes to the Emergency Department Complaining of Coughing

The patient comes to the emergency department complaining of coughing and difficulty breathing. The patient's diagnosis is heart failure. He asks the nurse how difficulty breathing could be a heart problem. What is the best response by the nurse?

A) "The right side of your heart has weakened and blood has entered your lungs."
B) "The right side of your heart has enlarged and cannot effectively pump blood."
C) "What you have is called congestive heart failure."
D) "The left side of your heart is weak and pumps blood too quickly."
E) "The left side of your heart has weakened and blood has entered your lungs."