Most people agree that eating healthy food is important.But sometimes making good food choices can be difficult.Now，there are apps that can help people learn about the food they eat to improve their health and their dining out experience. OpenTable app OpenTable app helps people choose restaurants when they want to go out to eat.It is a free service that shows users restaurant available based on where and when they want to dine.It gives users points when they make reservations(保留，预定)，which can add up to discounts on restaurant visits. Max McCalman's Cheese & Wine Pairing appWine and cheese can be a great combination.But which wines go best with which cheeses？Max McCalman's Cheese & Wine Pairing app can help.It provides information about hundreds of different cheeses and suggests wines to pair with each.Max McCalman's Cheese & Wine Pairing app is free. HappyCow app Vegetarians do not eat animal meat.Vegans do not eat any animal products.The HappyCow app is made for both groups.Users can search for vegetarian-vegan restaurants and stores around the world. LocalEats app Restaurant chains，like McDonalds，can be found almost anywhere a person might travel.But sometimes travelers want to eat like locals.The LocalEats app is designed for that.It can help you find local restaurants in major cities in the US and in other countries.It costs about a dollar.Where Chefs Eat app "Where Chefs Eat"is a 975-page book.Most people would not want to carry that around.But there is a much lighter app version of the same name for just 15.Six hundred chefs provide information on 3，000restaurants around the world on the Where Chefs Eat app. Happycow app is designed for those who prefer ( )A. local foods B. wine and cheese C. vegetables D. animal meatWhat app costs you most according to the text ( )A. OpenTable.B. Where Chefs EatC. LocalEats D. Max McCalman's Cheese & Wine Pairing.Where does this passage most probably come from ( )A. A science textbook.B. A tourist map.C. A museum guide.D. A technology report.