Please answer all questions

1		Vitamin K is excreted less efficiently than the other fat-soluble vitamins.
			A)	True
			B)	False
2		Some people don't need a dietary source of vitamin D to maintain their health.
			A)	True
			B)	False
3		Fat-soluble vitamins are generally lost more easily in cooking than are the water-soluble vitamins.
			A)	True
			B)	False
4		Vitamin D improves calcium absorption.
			A)	True
			B)	False
5		Beta-carotene is an important precursor of vitamin D.
			A)	True
			B)	False
6		Intakes as little as three times needs for vitamin A may be toxic, especially in early pregnancy.
			A)	True
			B)	False
7		Vitamin D can be considered a prohormone.
			A)	True
			B)	False
8		Some segments of the population benefit from routine use of a vitamin and mineral supplement.
			A)	True
			B)	False
9		Because numerous studies support the efficacy of vitamin E supplementation, health experts routinely recommend supplements of 400 IU per day.
			A)	True
			B)	False
10		"Let the Upper Level" be your guide suggests that any supplement use should at least exceed the upper level set for the nutrient.
			A)	True
			B)	False
11		Green leafy vegetables are good sources of vitamin K.
			A)	True
			B)	False
12		The RDA for thiamin is set in relation to the intake of dietary fat.
			A)	True
			B)	False
13		One of the richest sources of dietary thiamin is pork and pork products.
			A)	True
			B)	False
14		Milk is an excellent source of riboflavin.
			A)	True
			B)	False
15		Older people who exhibit anemia may have a vitamin B-12 deficiency.
			A)	True
			B)	False
16		The body can synthesize the vitamin niacin from the amino acid tryptophan.
			A)	True
			B)	False
17		Eating an excessive amount of raw egg whites can lead to a biotin deficiency.
			A)	True
			B)	False
18		Excessive supplementation with vitamin B-12 may mask a folate deficiency.
			A)	True
			B)	False
19		Vitamin B-12 is present only in animal foods.
			A)	True
			B)	False
20		A deficiency in vitamin C causes pinpoint hemorrhages in the skin.
			A)	True
			B)	False
21		Many nutrients in a diet contribute to a reduced risk of developing cancer.
			A)	True
			B)	False