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Some scientists believe that sugar causes a specific type of pancreatic cancer. They have found that people who consume at least 2 carbonated drinks containing sugar per day have a 90% higher rate of pancreatic cancer than those who drink the same number of diet drinks per day. Therefore, if we were to substitute diet drinks for regular soda pop, it would considerably reduce our chances of getting pancreatic cancer.

Which of the following, if true, most seriously weakens the argument above.

Select one of the following answer choices

A Many diet drinks contain artificial sweeteners called cyclamates, which have been known to cause intestinal and bladder cancer in lab studies

B Statistically, people who consume several sugared drinks a day are also the least likely to maintain a regular exercise regimen It has been shown that regular exercise is a factor in reducing the pancreatic cancer

C People who generally avoid sugared beverages also tend to avoid sugar in other parts of diet

D Diet drinks have actually been linked to a higher risk of weight gain

E The study showed that the increase in rate of pancreatic cancer remained the same whether the person drank 2 or 5 sugared drinks