A Gasoline Distributor Wonders Whether an Individual's Income Levels Influences $\alpha$

Multiple Choice

A gasoline distributor wonders whether an individual's income levels influences the grade of gasoline purchased.
Using $\alpha$ = .05,the appropriate decision is ___.

A) reject the null hypothesis and conclude the two variables are not independent
B) reject the null hypothesis and conclude the two variables are independent
C) do not reject the null hypothesis and conclude the two variables are not independent
D) do not reject the null hypothesis and conclude the two variables are independent
E) do nothing