Fitting a straight line to a set of data yields the following prediction line. Complete (a) through (c) below. Y=8+7X a. Interpret the meaning of the Y-intercept, bo. Choose the correct answer below. OA. The Y-intercept, bo=8, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 8 units. OB. The Y-intercept, bo 8, implies that when the value of X is 0, the mean value of Y is 8. OC. The Y-intercept, bo =7, implies that when the value of X is 0, the mean value of Y is 7. OD. The Y-intercept, bo 8, implies that the average value of Y is 8.