Many e-commerce sites either provide a long list of products or

Many e-commerce sites either provide a long list of products or lump them behind a search button, making it difficult to find them. Arrange your products into logical categories and subcategories, but do not overdo it. Research says it that most people get overwhelmed with more than 7 categories. The customer must be able to easily search any product without help. Your product should have a clear and high-quality picture, short and detailed specifications. If necessary add video or pictures of different viewpoints （top angle, side view） along with the product specifications.
Keep all kinds of payment options available to your customers. Not everyone feels comfortable buying through a credit card, or has one. Allow for debit cards, fax, telephone, snail mail, paper and electronic cheques. And sign up for fraud checking facility, without which you could easily end up losing entire day's sales within minutes. Provide a currency converter if you offer products or payment in other currencies. Including a telephone number for customer support on the order is a must. It gives the buyers some extra feelings of security that they can always talk to a live person if anything goes wrong with the buying preprocess.
18."People get overwhelmed with more than 7 categories" means .
A、people have trouble dealing with more than seven categories
B、people are completely struck down by more than seven categories
C、people get excited with more than seven categories
D、more than seven categories gain complete control of people
【正确答案】：A