An Economist Conducted a Study of the Possible Association Between

An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. Of particular interest was whether higher income would result in shoppers spending more on groceries. A random sample of shoppers at a local supermarket was obtained. A questionnaire was administered asking about the weekly income of each shopper's family and their grocery bill for that week. The scatterplot of weekly grocery expenditures vs. income shows:

A) a weak positive association between the two variables.
B) a weak negative association between the two variables.
C) a strong positive association between the two variables.
D) a strong negative association between the two variables.