In a multiple regression model,which of the following is true?
A)The coefficient of determination will be equal to the square of the highest correlation in the correlation matrix.
B)Adding variables that have a low correlation with the dependent variable will cause the R-square value to decline.
C)The sum of the residuals computed for the least squares regression equation will be zero.
D)The adjusted R-square might be higher or lower than the value of the R-square.