What Was the Effect of the Twenty-Sixth Amendment That Enfranchised

What was the effect of the Twenty-Sixth Amendment that enfranchised 18- to 20-year-olds?

A) It boosted voter turnout in the United States above that of most other democratic nations.
B) It reduced the national voter turnout rate.
C) It increased the national voter turnout rate.
D) It decreased the percentage of the population that distrusts the American political system.
E) It countered the increasing social mobility of this group.