A 26-Year-Old Man Who Survived Childhood Acute Lymphocytic Leukemia (ALL)

A 26-year-old man who survived childhood acute lymphocytic leukemia (ALL) , one of the most common childhood cancers, now complains of weakness, fatigue, and shortness of breath. His treatment for ALL likely included anthracyclines. What is the most likely cause of his symptoms?

A) Recurrence of ALL
B) CNS problems resulting from childhood chemotherapy
C) Heart failure resulting from childhood chemotherapy
D) Hormonal dysfunction resulting from childhood chemotherapy