Data Were Collected on Monthly Sales Revenues (In $1,000s) and Monthly

Data were collected on monthly sales revenues (in $1,000s) and monthly advertising expenditures ($100s) for a sample of drug stores.The regression line relating revenues (Y) to advertising expenditure (X) is estimated to be
) The correct interpretation of the slope is that for each additional ____________________________ .

A) $1 spent on advertising, predicted sales revenue increases by $9,000
B) $100 spent on advertising, predicted sales revenue increases by $9,000
C) $100 spent on advertising, predicted sales revenue decreases by $9,000
D) $1,000 in sales revenue, advertising expenditures decrease by $48.30
E) $100 in sales revenue, advertising expenditures decrease by $48.30