If it is true that a diet relatively high in salt is causally linked to the onset of hypertension, which of the following, if true, most plausibly accounts for the new findings? A. Only a minority of those with hypertension have been properly diagnosed. B. Chronic hypertension is not a serious problem in the population studied. C. Most people with chronic hypertension have intentionally restricted their salt intake. D. Hypertension occurs most frequently in those who have a family history of hypertension. E. Excess salt intake is inherently dangerous to health.