Cheryl recently moved across the state, and began really missing the native trees she had at her old house. So, she bought some of the same type of tree and planted them at her new house. At her old house, it rained fairly often, but the rocky, grey soil dried out quickly after it rained. At her new house, it rains the same amount as at her old house, but the black, clay-rich soil stays wet for a long time after it rains. Several weeks after planting the trees, the trees died. Which of the following is the best explanation for this? A. The trees needed to be planted in soil that was different from both locations. B. The trees can grow only in soils that are grey in color. C. The soil at the old house should have been wetter. D. The soil at the new house does not drain water quickly enough for these trees.