An online shopping application allows customers to select the item quantity of different goods and add items to the shopping cart. In the shopping cart, the application displays the price for each item type, indicates the quantity of each item type, calculate the total item prices, and calculate the total cost for all items in the shopping cart. The application pulls the price of each item type from a data page that references an external inventory management system. Select two unit tests useful in developing the shopping cart page. (Choose Two)