Questions 172~175 refer to the following information. 
There is a common myth that grain products such as bread, pasta, and rice areresponsible for weight gain and should be avoided if one wants to lose weight.However, the reality is quite different from this widely held belief. While it is true thatconsuming large amounts of refined grains, which are often found in processedfoods, can contribute to weight gain, grains themselves are not inherently fatteningor unhealthy. 
In fact, substituting whole grains for refined-grain products is a healthier choice andmay even help one feel fuller for longer. According to the Dietary Guidelines forAmericans 2020-2025, consuming grains as part of a healthy eating plan isrecommended. At least half of the grains consumed should be whole grains. Someexamples of whole grains include brown rice and whole-wheat bread, cereal, andpasta. 
Whole grains are a rich source of iron, fiber, and other essential nutrients that thebody needs to function properly. By consuming whole grains, one can maintain ahealthy body weight and also get essential nutrients that can help prevent chronicdiseases. In contrast, refined grains are often stripped of important nutrients duringprocessing and can contribute to health problems such as obesity, diabetes, andheart disease. 
Therefore, if you are looking to lose weight or maintain a healthy weight, incorporating whole grains into your diet can be an effective and nutritious way to doso. So, next time you hear the myth that grain products are fattening, remember thatthis is not entirely true, and whole grains are actually an important part of a healthydiet.
【題組】172.Which of the following is a common myth about grain products?
(A) They are rich in fiber and nutrients.
(B)They are fattening and should be avoided.
(C) They are a good source of protein.
(D) They are not recommended as part of a healthy diet.