Aventis is a major manufacturer of the flu (influenza) vaccine in the US. Aventis manufactures the vaccine before the flu season at a cost of $10 per dose (e "dose" is vaccine for one person). During the flu season Aventis sells doses to distributors and to health-care providers for $25. However, sometimes the flu season is mild and not all doses are sold-if a dose is not sold during the season then it is worthless and must be thrown out. Aventis anticipates demand for next flu season to follow a normal distrbituion with a mean of 60 million units and a standard deviation of 15 million units Which one of the following is NOT CORRECT? A. Critical ratio is 0.6
B. Cost of overage is $10.
C. Stock-out probability is 5%
D. Cost of underage is $15.