Which Statement Describes a Feature of Vitamin a Nutrition? ​

Which statement describes a feature of vitamin A nutrition? ​

A) Deficiency is common in United States.
B) Toxicity occurs from excess intakes of preformed vitamin A as well as beta-carotene.
C) Supplements are recommended for certain groups of infants and children infected with the measles in the United States.
D) In poor countries, supplements prevent and cure night blindness but offer little protection against malaria and lung disease.