A、They usually promote pre-Black Friday sales. B、They do nothing but just wait for the battle. C、They work hard to keep themselv

Black Friday is the day after Thanksgiving, and it’s a massive shopping day. This year the retailers have a little bit of a unique opportunity. So, here are a few strategies:
     [3]One, retailers are rolling out promotions early. More people are shopping in November, before Black Friday.
    Two, minimize wait times. Stores are increasing staff and mobile checkouts. The fact is, shoppers are more valuable than ever before. So, stores are really working hard to keep them happy.
    Three, focus on online sales. Researcher NPD Group says 60 percent of consumers plan to shop online this year. So, expect more special online and mobile deal, and fewer shipping fees, but at the end of the day, these tactics can only go so far.
    Ultimately, what people spend and where they spend it, depends on how they feel about their job, the economy, and how much money is in their pocket.
3 What do the retailers usually do before Black Friday?
4 What is one of the strategies according to the news report?