Greatly exceeding the recommended daily intake of vitamins A and D is dangerous, ... ...

Greatly exceeding the recommended daily intake of vitamins A and D is dangerous, for they can be toxic
at high levels. For some vitamin-fortified foods, each serving, as defined by the manufacturer, has 100 percent of the recommended daily intake of these vitamins. But many people overestimate what counts as a standard serving of vitamin-fortified foods such as cereal, consuming two to three times what the manufacturers define as standard servings.

Which one of the following is most strongly supported by the information above?


(A) Few people who consume vitamin-fortified foods are aware of the recommended daily intake of vitamins A and D.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in PT71 (Dec 2013): Logical Reasoning A