The EOQ model with quantity discounts attempts to determine

Question $22$ options:

a$)$

what is the shortest lead time.

b$)$

what is the lowest amount of inventory necessary to satisfy a certain service level.

c$)$

what is the lowest purchasing price.

d$)$

how many units should be ordered.

e$)$

whether to use fixed$-$quantity or fixed$-$period order policy.