The correct option is D All of the above
Wernicke's encephalopathy and Korsakoff's syndrome are different conditions but both are due to brain damage caused by lack of vitamin B1. Lack of vitamin B1 is common in people with alcoholism. Korsakoff syndrome tends to develop as Wernicke's symptoms go away. Wernicke encephalopathy causes brain damage in lower parts of the brain called the thalamus and hypothalamus.
Laennec's cirrhosis is the disease of liver in which normal lobular architecture is lost with fibrosis and later nodular regeneration and chronic alcoholism can cause Laennec's cirrhosis.
Thus, the correct answer is option (D), 'All the above'.