In the context of a balanced diet, which of the following best describes the role of an appetizer?
A) An appetizer should be high in calories to ensure adequate energy intake for the main meal.
B) An appetizer is a small portion of food intended to stimulate appetite and provide a nutritional balance to the meal.
C) An appetizer serves as a dessert option that is rich in sugars and fats to satisfy cravings.
D) An appetizer is meant to replace the main course in order to limit overall caloric consumption.