【阅读选择】Parents often decide on the basis of what their children want. Cathy, a mother told us, “My children have packed lunches, because they say they hate school dinners. I make 3 packed lunches every morning, so our kitchen is like a sandwich bar in the morning.” However, another mother, Susan made her choice based on the nutritious value of the food. She said, “My daughter always has school dinners. I think she probably gets healthier food by having a cooked lunch at school than she would if I made a few sandwiches.”Which of the following is TRUE according to the passage?