On average a hospital has 250 occupied beds. The discharge nurse releases one patient per hour on average, though the time between discharges varies (with variance of the time between discharges is 30 minutes). Which of the following tools is required to calculate the time an average patient spends in the hospital? Group of answer choices a. Build up diagram b. Little's Law c. Queueing formula and Little's Law d. No calculation is needed - the average length of stay is 0 e. None of the listed responsesWhich of the following would not mitigate the Bullwhip Effect? Group of answer choices a. "Surge pricing," i.e. high prices when demand is high and low prices when demand is low b. Sharing point-of-sales data with suppliers c. Shipping via air frieght d. Sourcing from nearby suppliers e. None of the above