A nurse is providing education about the pathophysiology of cardiomyopathy to the family of a child who has been recently diagnosed with the condition. Which of the following statements made by a caregiver indicates understanding?

"There is an increased workload on the right side of the heart, making the muscle thinner and harder for the heart to pump blood through the body."

"There is an increased workload on the left side of the heart, making the muscle thicker and harder for the heart to pump blood through the body."

"There is an increased workload in the right and left ventricles, making the muscle thicker and harder for the heart to pump blood through the body."

"There is an increased workload in the right and left atria, making the muscle thinner and harder for the heart to pump blood through the body."