Which of the following need not to be used in an LCIA (life cycle impact assessment) study of the washing process

A、Theelectricityconsumptioninwashingmachineproduction;
B、Thewastewaterdischargefromwashingprocess;
C、Theelectricityconsumptionforwashingprocess;
D、Detergentdosageforwashingprocess