A nurse is reinforcing education to a family with a child who has Kawasaki disease. Which of the following statements made by the caregiver indicates an understanding of the education provided?

"Kawasaki disease is an abnormal immune response that only affects the liver."

"Kawasaki disease is an abnormal immune response that causes injury to the body's muscles."

"Kawasaki disease is an abnormal immune response in which the body attacks the skin only."

"Kawasaki disease is an abnormal immune system response that can weaken the coronary arteries."