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Which of the following is NOT true regarding forms of vitamin A compounds? Retinol is stored...

Which of the following is NOT true regarding forms of vitamin A compounds?

Retinol is stored in the liver.

Retinal is used in processing visual signals.

Retinoic acid is the hormone form.

Carotenoids are vitamin A precursors found in plant foods.

Only plant foods are preformed vitamin A sources.

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