With the living standard improving rapidly, people’s demand upon food and catering (餐饮) service is also changing rapidly. Such changes reflect the improvement of modern lifestyle and life quality. Firstly, people demand that the food should provide overall and balanced nutrition. Now people have realized that food with high protein (蛋白质) and fat is harmful to their health, and hence begin to take in more different nourishment. Secondly, people pay more attention to the sanitation of the food and the catering service. The focus on "green food", "green material" and "fresh material" can be taken as the prime instance to show people’s consciousness of the importance of sanitation. At last, the catering service industry has been increasingly standardized (标准化). Now most restaurants can provide their guests with standardized food and service. On the other hand, many restaurants have come up with a lot of special food and services in order to meet various needs of different guests. What can we learn from the passage
A. Restaurants that offer traditional food will disappear. B. Restaurants that play green and standardization will survive. C. Restaurants that offer limited services will get lost in the market. D. Restaurants that offer special food and services make small profits.