GMAT Critical Reasoning (CR) | Re: Medical education in the United States has focused almost

If you're stuck between A and B. Read this:

Conclusion: Focused almost exclusively on curative medicine while preventive care has been given scant attention. This is misguided.

Why?
Premise: Medical schools should invest as much time in teaching their students how to prevent illness as in teaching them how to cure it.

Question Stem:
Which of the following, if true,most strengthens the argument above?

(B) In 1988, for every three cents the United States spent on prevention, it spent 97 cents
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