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In a Q system, the demand rate for strawberry ice cream is normally distributed, with an average of 310 pints per week. The lead time is 5 weeks. The standard deviation of weekly demand is 10 pints. a. The standard deviation of demand during the 5-week lead time is pints. (Enter your response rounded to the nearest whole number.) b. The average demand during the 5-week lead time is pints. (Enter your response as an integer.) c. The reorder point that results in a cycle-service level of 90 percent is pints. (Enter your response rounded to the nearest whole number.)