The Regression Coefficient B _Y and the Correlation Coefficient R

The regression coefficient b _Y and the correlation coefficient r, _________.

A) necessarily increase in magnitude as the strength of relationship increases
B) are both slopes of straight lines
C) are not related
D) will equal each other when the variability of the X and Y distributions are equal
E) are both slopes of straight lines and will equal each other when the variability of the X and Y distributions are equal