In the basic EOQ model, if the cost of placing an order doubles, and all other values remain constant, then $\_\_\_\_\_.$

A$.$

if the ordering cost were to double, the EOQ would rise.

B$.$

if annual demand were to double, the EOQ would increase.

C$.$

if the carrying cost were to increase, the EOQ would fall.

D$.$

if annual demand were to double, the number of orders per year would increase.

E$.$

all of these statements are true.