As a company transitions to using a common part rather than differentiated parts (i.e., implement inventory pooling), they can _______ .

A. Maintain the same service level with less total safety stock by using the common part.

B. Increase their service level by using the common part while maintaining the same total safety stock.

C. Add the mean demands of the differentiated parts together to determine the mean demand of the common part.

D. Only A and B are true

E. Only A and C are true

F. A, B and C are true