All the statements about thiamin are true except
a. Occupies a site on nerve cell membranes and nerve processes and their responding muscles depend heavily on thiamin.
b. The classic thiamin-deficiency disease is beriberi.
c. In developed countries today, alcohol abuse often leads to a severe form of thiamin deficiency, Wernicke-Korsakoff syndrome because alcohol impairs thiamin absorption.
d. Food sources of thiamin include pork products, sunflower seeds, enriched/whole-grain cereals, and legumes.
e. Plays a minor role in the energy metabolism of all cells.