Read the following statements carefully and answer the given question.
Cocoa and chocolate products have been used as medicine in various cultures for many centuries. Chocolate is sourced from plants, which means it contains many of the health benefits of leafy vegetables.
Which of the following statements weakens the above argument?
(A) Dark chocolate contains a large number of antioxidants which slow down the ageing process
(B) A small study revealed that regular intake of chocolate increases insulin sensitivity, thus lowering the chances of diabetes.
(C) Green leafy vegetables have substances which protect skin from UV rays.
(D) Chocolates have three types of fats, one of which increases the level of 'bad cholesterol'.