Which one of the following statements is best?

Question $2$Select one:

A$.$

In a periodic review system, the value of Q is kept the same from one cycle to another.

B$.$

A P system requires more administrative control and computer support than does a Q system.

C$.$

A P system lends itself more to quantity discounts than does a Q system.

D$.$

A P system requires more safety stock than a Q system.