A survey was conducted among the non-hospitalized adult population of the united states during 2008 through 2011. The results from this survey are shown below. Age group persons with hypertension (%) 18-29 years 4 30-39 years 10 40-49 years 22 50-59 years 43 60-69 years 54 70 and older 64 the researchers stated that there was an age-related increase in the risk of hypertension in this population. You conclude that the researchers' interpretation: (a) is correct (b) is incorrect because it was not based on rates (c) is incorrect because incidence rates do not describe risk (d) is incorrect because prevalence is used (e) is incorrect because the calculations are not age-adjusted