I need this one, who can help me?, please, it’s a quiz

Which of the following is the correct ratio for converting kilograms to grams

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.