For Older Adults,why Are Very High Intakes of Retinol a Potential

For older adults,why are very high intakes of retinol a potential problem?

A) Retinol is absorbed very efficiently and accumulates in the body.
B) Retinol is NOT readily cleared from the blood leading to accumulation of toxic levels.
C) Retinol is metabolized to toxin compounds that harm bones.
D) Retinol binds to protein receptors that influence gene expression.