Two Projects Are Mutually Exclusive If

Two projects are mutually exclusive if

A) the expected costs and benefits of one project do not depend on whether or not the other project is chosen.
B) the expected costs and benefits of one project depend on whether the other project is chosen.
C) if it is impossible to do both at the same time
D) in the process of choosing one project at least one other project is chosen for comparison.
E) the possibility of the implementation of one project directly depends on whether or not the other one is implemented.