In One Study of Sodium Intake and Cardiovascular Disease, Which

In one study of sodium intake and cardiovascular disease, which used a sample of over 14,000 participants, the researchers found a statistically significant association between high sodium intake and the prevalence of hypertension among normal-weight subjects. The prevalence of hypertension in the group with the lowest sodium intake was 19.1%; the prevalence of hypertension in the group with the highest sodium intake was 21.8%. This data suggests that

A) even though the finding was statistically significant, it may not have much practical importance.
B) the finding has both practical and statistical significance, and should be reviewed in more detail.
C) the finding has neither practical nor statistical significance, and should be ignored.
D) one of the main causes of hypertension is a high intake of sodium.