please help solve. not sure how to complete problem. thanks

D Use the following information to answer the following 5 Questions. ArrowCo wants to streamline its inventory for semiconductor parts in their Parts Distribution Center (PDC). The daily demand for semiconductors at the PDC is somewhat variable. The daily demand is normally distributed, with a mean of 300 cartons, and a standard deviation of 30. a Their supplier charges $40 per carton, and is very reliable, with a lead time of 5 days and no variance. On every order placed, ArrowCo has to pay their supplier $200 in delivery charges and fees. ArrowCo's cost of holding inventory is 10% annually. Any unsold carton is carried over to the next period. ArrowCo plans to use the (Q,r) model to determine her ordering quantity and inventory level. Assume 300 days in a year. The optimal service level for ArrowCo to maintain is 97.72% NORMSINV(0.9772)= 2. L(2)= 0.0085. This is the standard normal loss function. Question 36 2 pts What is ArrowCo's optimal order quantity? 1000 O 2000 O 3000 4000 D Question 37 2 pts What is the standard deviation of the lead-time demand? 30 O 33.62 0 67.08 Question 38 2 pts How much safety stock should ArrowCo plan? O 30 O 100 135 Question 39 2 pts What is the ROP for ArrowCo? O 1.000 O 1.145 1.635 1.915 Question 40 2 pts Calculate the Fill Rate for ArrowCo, given by 1 - E[Lost Sales]/Q. 0 95% O 96.96% 99.98% O 100%