A newsvendor model is used to make optimal inventory decisions for a fashion apparel manufacturer. The manufacturer's demand follows a Normal distribution. Which of the following statements are true? . Fixed rental costs of stores do not influence the optimal order quantity. 1. If the critical ratio is 0.80 and the corresponding optimal order quantity is stocked, then there is a 20% probability of turning one or more customers away. III. If the critical ratio is 0.4, then the optimal order quantity is less than the mean demand. O I only O ll only O III only I and II only O I and III only O II and III only O I, II, and III O None of the above A newsvendor model is used to make optimal inventory decisions for a fashion apparel manufacturer. The manufacturer's demand follows a Normal distribution. Which of the following statements are true? . Fixed rental costs of stores do not influence the optimal order quantity. 1. If the critical ratio is 0.80 and the corresponding optimal order quantity is stocked, then there is a 20% probability of turning one or more customers away. III. If the critical ratio is 0.4, then the optimal order quantity is less than the mean demand. O I only O ll only O III only I and II only O I and III only O II and III only O I, II, and III O None of the above