A Study Examines the Relationship Between Urine Sodium Excretion and Systolic

A study examines the relationship between urine sodium excretion and systolic blood pressure in a large cohort of patients from several countries.  The following results are reported for change in systolic blood pressure for every 1-g increase in urine sodium excretion: Which of the following best describes the study results?

A) High sodium excretion causes susceptibility to hypertension
B) In non-hypertensive individuals, there is no association between  systolic blood pressure and increase in sodium excretion
C) The slope of association is steeper for patients with hypertension than those without hypertension
D) Younger individuals (age <45) are more susceptible to the effect of sodium on blood pressure
E) Younger individuals (age <45) have higher sodium excretion

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