Matthew was collecting rocks and then weighing the results of his collection. The table below shows his results. Based on his results, which statement describes the relationship between r, the rocks collected, and w, the weight of the collection of rocks per quantity collected? A. The relationship is proportional because the ratio of w to r is constant. B. The relationship is not proportional because the ratio of w to r is not constant. C. The relationship is proportional because the ratio of w to r is not constant. D. The relationship is proportional because the difference between w and r is constant.