The statement says that 'Homeowners aged 40 to 50 are more likely to PURCHASE ice cream...' and that '... teenagers EAT more ice cream...'. The statement discusses about the purchasing of ice-cream but concludes about the consumption. Thus, the writer's argument is flawed because she fails to distinguish between purchasing and consuming. Option A is the answer. The other options do not fit the context. B cannot be the answer because even if some other information was provided regarding the homeowners, it would still not clarify the basic conflict between purchasing and consuming. The added information would not influence anything else. Option C is flawed for a similar reason - it doesn't matter if the argument is based on popular belief or research findings as it still compares purchasing to eating. Options D and E are sort of redundant. Option A is the only option that befits the context.