Rice is a cheap staple food eaten multiple times of day by many people all over the world. in trufflelandia, residents also eat expensive mushrooms known as truffles once per year as a birthday celebration. rice keeps the people alive, and truffles are not necessary for sustaining their lives. why is rice so cheap and truffles so expensive? a. truffles taste better, so they are worth more money. b. rice is easy to cook, so people buy a lot of it. if people are going to buy so much, then it has to be cheap. c. truffles are more nutritious, and healthy food is always more expensive than unhealthy food. d. people eat so much rice that an additional serving of rice has little marginal value, but the marginal value of another serving of truffles is very high.