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A study was conducted at the end of an introductory statistics course to investigate the relationship between x = skipping class and y = college GPA. The sample regression equation is y = 3.54 - 0.0777x. The sample slope b = - 0.0777 has standard error se = 0.015. Construct and interpret a 90% confidence interval for the slope in the population. Click the icon to view the table. The 90% confidence interval is (OO) (Round to three decimal places as needed.) Interpret the 90% confidence interval. Choose the correct answer below. O A. On average, a student's GPA decreases by between the lower and upper limits of the confidence interval for every additional class skipped. O B. On average, the amount of classes skipped increases by between the lower and upper limits of the confidence interval for every 10 points the student's GPA increases. O C. On average, a student's GPA decreases by either the amount of the lower limit or the upper limit of the confidence interval for every additional class skipped. O D. On average, a student's GPA increases by between the lower and upper limits of the confidence interval for every additional class skipped