What is "revile"(paragraph 4, sentence 3) most likely to mean

A．it passes through the intestines without being absorbed
B．it facilitates the absorption of vitamins by the body
C．it helps reduce the incidence of heart disease
D．it prevents excessive intake of vitamins

A．contains plenty of nutrients
B．renders foods calorie-free while retaining their vitamins
C．makes foods easily digestible'
D．makes foods fat-free while keeping them delicious