In a multiple regression model, the coefficients on the independent variables measure

A. the change in that independent variable from a one-unit change in the dependent variable, all other influences held constant.
B. the change in the dependent variable from a one-unit change in that independent variable, all other influences held constant.
C. the change in the dependent variable explained by the random error, all other influences held constant.
D. the percent of the variation in the dependent variable explained by a change in that independent variable, all other influences held constant.

Answer: B