A product whose EPQ is $40$ units experiences a decrease in the ordering cost from $$90$ to $$10.$ The new EPQ $($select the closest answer$)$:

a$.120$ units

b$.13$ units

c$.360$ units

d$.4$ units

$7.$ The $"$re$-$order poim" is:

a$.$ given by half of the maximum stock level.

b$.$ the level of stock at which an order is placed.

c$.$ the minimum stock level below which actual stock showid not fail

d$.$ the maximum stock in inventory.

$8.$ Uking the basic EOQ model, if be ordering cost doubles, the order quantity will:

a$.$ be double its former value.

b$.$ be about $50\%$ of its former value.

c$.$ increase by ubout $41\%$ of its foemer value.

d be unsffected.