Fitting a straight line to a set of data yields the following prediction line. Complete (a) through (c) below. +100, a. Interpret the meaning of the Y-intercept, bo. Choose the correct answer below. OA. The Y-intercept, bo = 6, implies that the average value of Y is 6. B. The Y-intercept, bo = 6, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 6 units. OC. The Y-intercept, bo = 6, implies that when the value of X is 0, the mean value of Y is 6. OD. The Y-intercept, bo = 10, implies that when the value of X is 0, the mean value of Y is 10. b. Interpret the meaning of the slope, b. Choose the correct answer below. OA. The slope, b =10, implies that the average value of Y is 10. B. The slope, b =6, implies that for each increase of 1 unit in X, the value of Y is expected to invease by 6 units. OC. The slope, b =10, implies that for each increase of 1 unit in X, the value of Y is expected to decrease by 10 units. OD. The slope, b = 10, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 10 units. c. Predict the mean value of Y for X=4. =(Simplify your answer.)