Happy Baby, a maker of baby foods, has found a high correlation between the aggregate company sales (in $100,000 ) and the number of births nationally the preceding year (one year prior). Suppose that the sales and the birth figures during the past eight years are Name the independent and dependent variables given the correlation information. Select one: a. "Births" is the independent variable and "Year" is the dependent variable. b. 'Sales" is the independent variable and 'Year' is the dependent variable. c. "Sales" is the independent variable and "Births" is the dependent variable. d. "Births" is the independent variable and "Sales" is the dependent variable. e. "Year' is the independent variable and 'Sales" is the dependent variable