Identify the irrelevant sentence.
(I) The best way to lose body fat weight is through diet. (II) Many people believe that exercise is a good way to lose weight. (III) This is not so. (IV) Fifteen minutes of moderately vigorous exercise will only burn approximately 100 calories. (V) You need 10 hours of moderate exercise to burn the calories equivalent to one pound of fat, but you cannot selectively burn only fat.