A
Carrots are known to be one of the best sources of naturally occurring vitamin A. However, although farmers in Canada and the United States report increasing demand for carrots over the last decade, the number of people diagnosed with vitamin A deficiency in these countries has also increased in that time. Each of the following, if true of Canada and the United States over the last decade, helps to resolve the apparent discrepancy described above EXCEPT:
A: Certain cuisines that have become popular use many more vegetable ingredients, including carrots, than most cuisines that were previously popular.
B: Weather conditions have caused a decrease in the availability of carrots.
C: The purchase of peeled and chopped carrots has become very popular, though carrots are known to lose their vitamins quickly once peeled.
D: Carrot consumption has increased only among those demographic groups that have historically had low vitamin A deficiency rates.