nayana-c1.867c992ae9100904cc61c84591adf0f8f863e0387e30f0d0dbc86640e9f50a1a.en.train.25227

The task

What is the primary reason for the preferential cytotoxicity of vitamin C to tumor cells? A. Enhanced natural killer cell activity B. Increased intracellular hydrogen peroxide generation coupled with a lack of catalase activity in neoplastic cells C. Direct interference with B and T cell activity D. Reduction in reactive oxidant neoplastic cytotoxicity Return only the single uppercase letter of the correct option.