BurgerMan offers an assortment of packaged ready-to-eat sandwich items. This festive season it wants to add to its menu the egg-based mayonnaise sandwiches, which are considered non-vegetarian, and the vegetarian mayonnaise sandwiches, but can stock only one of the two types. Only one-third of BurgerMan's customers are vegetarians. Hence, an increase in revenue being the main motive behind the new addition to the shelves, BurgerMan should add only the egg-based mayonnaise sandwiches to its selection.
Which of the following, if true, most seriously weakens the argument?
A. The proportion of sales from non-vegetarian customers is almost always higher than that from the vegetarian section.
B. The cost of the non-egg mayonnaise is substantially higher due to the ingredients that have to be used instead of egg and that puts the item in the expensive category.
C. Difference in the taste of the two types of mayonnaise sandwiches being negligible, the non-vegetarian customers will go for the vegetarian ones in the absence of its non-vegetarian counterpart, but the vegetarians will never buy the egg-based ones.
D. BurgerMan stocks an assortment of sandwiches and does not anticipate any substantial increase in overall sales revenue from the new entrant.
E. A lot of people nowadays do not consider eggs a non-vegetarian product and have included it liberally in their diet.