Which of the following statements about portion sizes is true? a. portion sizes in restaurant meals have increased dramatically during the past 30 years. b. the u. s. food and drug administration (fda) has standardized portion sizes for restaurant menus and food labels nationwide, and these are aligned with portion sizes used in public health guidelines and tools such as choosemyplate. gov. c. the terms portion and serving size mean the same thing. d. the amount of pasta a restaurant puts on a plate is a serving size, whereas the amount of pasta that an average american customarily eats is a portion size.