Assume that you graph the changes in net present value against the changes in the value of a single variable a project. The steepness of the resulting function illustrates the:

A$.$ degree of operating leverage within the project.

B$.$ trade$-$off of variable versus fixed costs utilized by the project.

C$.$ range of total outcomes possible from accepting a proposed project.

D$.$ contribution margin of the project at various levels of output.

E$.$ degree of sensitivity of a project's outcome to a single variable of the project.