Which of the Following Is True of the EOQ Model

Which of the following is true of the EOQ model? Note that the optimal order quantity, Q, will be called EOQ.

A) If the fixed per order cost increases by 20%, then EOQ will increase by 20%
B) If the annual sales, in units, increases by 20%, then EOQ will increase by 20%.
C) If the average inventory increases by 20%, then the total carrying costs will increase by 20%.
D) If the average inventory increases by 20% the total order costs will increase by 20%.
E) The EOC is the same for all comppanies.