Cholecalciferol (vitamin D3) is not a true vitamin because:
A. it cannot be taken orally
B. it is made in our own bodies with the help of ultra-
violet rays
C. it is not water- or fat-soluble
D. excess intake may cause toxicity
b
Rationale: Cholecalciferol (vitamin D3) is not a true vitamin because it is made in our own bodies with the help of the sun's ultraviolet rays.
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Fill in the blank(s) with the appropriate word(s).
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