An airline has determined that 10 spare brake cylinders will give them stock out risk of 30%, whereas 14 will reduce the risk to 15% and 16 to 10%. It takes 3 months to receive items from supplier and the airline has an average of 4 cylinders per month. At what stock level should they reorder assuming that they wish to maintain 85% service level?
A12 items
B14 items
C26 items
D30 items
