A career counselor wishes to estimate, based on the following sample data, the mean increase in the annual salary of people (in thousands of dollars) per additional year of education pursued. Years, x 12 13 14 15 16 17 Salary, y 25 31 43 52 58 60 Using any of the three formulas, which of the following is the coefficient of determination? a. 0.9620 b. 0.0379 c. 0.9788 d. 0.9808 e. 0.0212