A 63-year-old man with established cirrhosis due to hepatitis C is followed in a hepatology clinic. According to current practice, which surveillance strategy is recommended to detect hepatocellular carcinoma at an early stage?ASerum alpha-fetoprotein alone every yearBNo surveillance is needed unless symptoms developCUltrasound of the liver every 6 months, with or without alpha-fetoproteinDScreening CT scan every monthELiver biopsy every 2 yearsCheck my answer