It Is Unreasonable to Label Some Foods as Healthy and Others

It is unreasonable to label some foods as healthy and others as unhealthy. All foods provide calories, which are necessary for human survival. If a food allows a human to survive, then it is by its very nature healthy, and common "healthy" foods are no different than their "unhealthy" counterparts.
The argument proceeds by

A) Explaining why a commonly held perception is true.
B) Explaining why unhealthy foods are actually more healthy than "healthy" foods.
C) Redefining a term in a way that is favorable to the argument.
D) Showing that a necessary condition for applying the term "healthy" is not always satisfied.
E) Showing that because something is true for everything, it must be true for a specific example.