please answer both correctly thank you so much

A store uses the newsvendor model to manage its inventory. Demand for its product is normally distributed with a mean of 500 and a standard deviation of 300. Store A purchases the product for $10 each unit and sells each for $25. Inventory is salvaged for $5. What is the optimal quantity the store should order of its product?

A. 725

B. 702

Newsvendor model is used under the following conditions:

A. When placing order to meet uncertain demand

B. When placing orders in presence to fixed ordering cost

C. When placing orders to smoothen production