In Simple Regression Analysis, If the Correlation Coefficient Is a Positive

In simple regression analysis, if the correlation coefficient is a positive value, then

A) the y-intercept must also be a positive value.
B) the coefficient of determination can be either positive or negative, depending on the value of the slope.
C) the least squares regression equation could have either a positive or a negative slope.
D) the slope of the regression line must also be positive.
E) the standard error of estimate can have either a positive or a negative value.