Jamal wants to make a model of a hill near his house to test the way the slope affects how rain runs down the hill. Which type of model would be best for what he needs? A. A scale drawing of the hill, looking down on it B. A scale drawing of a cross-section of the hill C. A scale-model mound made of the same materials that make the real hill D. A chart with measurements giving the height of the hill at various places on it