Critical Reasoning

Eat new Oat Munchies cereal. In a recent survey, four out of five nutritionists recommended the form of oat fiber in Oat Munchies to help reduce cholesterol levels and promote good health. Which of the following can be validly inferred from the passage above?
I. Four out of five nutritionists recommend Oat Munchies cereal.
II. Those who eat Oat Munchies regularly will have low cholesterol levels.
III. Oat fiber is necessary for good health.

A) I only

B) II only

C) III only

D) I and II only

E) Not I, II, or III