Kevin saved $1300 to spend on an amazing trip. He is using the Quantitative Reasoning Process to decide which kind of trip to take. He is now at the step where he is identifying key variables and making key assumptions. Which of the following activities would Kevin do in this step? Group of answer choices Forget planning and book a one-way flight to New Zealand in first class for $1250. Narrow his choice to three possible trips to make calculations easier, then list major cost categories that could change such as transportation, lodging, activities, and food. Decide which trip best meets his budget and preferences. Look at the pictures he took on his trip and think about how he can better stay under his budget the next time he travels. Add up all his estimates for transportation, lodging, activities, and food then subtract the total from $1300 for each possible trip