Which of the Following Is an Interpretation of the Direct

Which of the following is an interpretation of the direct effect of the independent variable on the dependent variable?

A) How much two cases that differ by one unit on the dependent variable will differ on the independent variable.
B) How much two cases that differ by one unit on the independent variable will differ on the mediator.
C) How much two cases that differ by one unit on the independent variable will differ on the dependent variable.
D) Two cases that differ by one unit on the mediator but are equal on the independent variable will differ by b units on the dependent variable.