The ratio of shortage cost to shortage plus excess cost is 0.67. The ratio of shortage cost to shortage plus excess cost is 0.8. The ratio of shortage cost to shortage plus excess cost is 0.5. The standard deviation of demand during lead time equals the daily standard deviation of demand times Grocery Store Accounting the square root of the lead time. The probability is 95 percent that demand during lead time will not exceed the amount on hand at the beginning of lead time. A) The EOQ.B) The lead time.C) The variability of demand.D) trial balance The demand or usage which one of these would not be a factor in determining the reorder point? rate.