Which of the Following Defines a Subclinical Deficiency

Multiple Choice

Which of the following defines a subclinical deficiency? 

A)  A nutrient deficiency caused by inadequate dietary intake of a nutrient 
B)  A nutrient deficiency caused by something like a disease condition or drug reaction that reduces absorption, accelerates use, hastens excretion, or destroys the nutrient 
C)  A deficiency in the early stages, before the outward signs have appeared 
D)  A deficiency that exhibits conflicting outward signs, requiring laboratory diagnosis 
E)  An iron deficiency