Assume you have product with qty in stock=1, and two people are trying to buy it at the same time. Which of the
following statements is true?

A.
Only one is able to add the product to the shopping cart. That person will be able to buy the product.

B.
Only the person who starts checkout first will be able to buy the product.

C.
Only the person who passes the payment step first will be able to buy the product.

D.
Both persons can go to the Place Order step, but the one who places the order first will get the product.

E.
Both persons will be able to complete the checkout, because both have local copies of the available
inventory.