Extended response rose's recipefor snack mix is shown. the recipe serves12 people but rose wants to make enough for 30people. snack mix recipeingredientsamount (cups)pretzelsdry cerealpeanutsmargarinesoy saucepart a explain how rose can calculate the amountof each ingredient she needs to serve 30 peoplepart b how much of each ingredient will roseneed? part c how many cups of dry snack mix willthere be in all? explain your answer.