—As you know, I’m not quite familiar with how to shop online. —It’s a piece of cake! I’ll show you how to do it.（)

A.First of all, you should find a good e-commerce site.

B.Next, add the items in your shopping cart and place the order.

C.Then compare the prices and features of the goods you like.

请帮忙给出正确答案和分析，谢谢！