accounting general knowledge

(11) Re-order quantity …… 3600 units
Maximum consumption ...… 900 units per week
Minimum comsumption …....300 units per week
Re-order period …………….….5 weeks
Based on this data Re-order level is?

•  (4500 units)
•  3900 units
•  1200 units
•  400 units
•  None of these