A food processor uses approximately 3969 glass jars a month. Becaue of storage limitations, a lotsize of 630 jars has been used. Monthly holding cost is $0.45 per jar and ordering cost is $90 per order. It has been found that this order quantity is not right. The manager would like to justify the present order quantity. One possibility is to simplify order processing to reduce the ordering cost. What ordering cost would enable the manager to justify the current order quantity?

a.90

b.22.5

c.7.5

d.45