The health care provider has recommended increased intake of thiamin for a client whose intake has been inadequate. When the client asks why the increase is necessary, how should the nurse explain its benefit?

A. "Thiamin is important in the metabolism of fats"
B. "Thiamin is a major nutrient in aiding the digestive process"
C. "Thiamin is the most important vitamin for proper liver function"
D. "Thiamin is essential for proper functioning of the nervous system"