Steven Has a Digestive Disorder That Prevents Him for Absorbing

Multiple Choice

Steven has a digestive disorder that prevents him for absorbing an essential nutrient,which we will call compound X,from food.He can,however,absorb this nutrient in supplement form with the same efficiency as a healthy person can absorb it from food,and once absorbed,metabolize the nutrient with the same efficiency as any healthy person.So he goes to a pharmacy and buys a bottle of compound X tablets.The maximum daily dose of the supplement as recommended on the bottle's label is equivalent to the UL for compound X.Which statement best describes the health effects of the dose? Note that an RDA has been determined for compound X.

A) Because of Steven's difficulties with absorption,a dose at the UL is essential to ensure that he absorbs enough of the nutrient from the supplement.
B) The dose will probably do Steven no harm and is likely to provide additional health benefits over the RDA.
C) The dose is toxic and Steven should reduce it to no more than the RDA.
D) The dose will probably do not harm,but is unlikely to provide additional health benefits over the RDA.