Xinjiang is located inland, and the temperature changes dramatically. "Wear fur coats in the morning and gauze around the stove to eat watermelon in the afternoon" refers to Xinjiang where the temperature difference between day and night is large. Grapes, cantaloupes and other fruits produced here have high yield and good quality. Karamay and southern Xinjiang are rich in oil resources, and Korla is also the only long-staple cotton producing area in China, which is favored by users at home and abroad for its long fiber, good color and high quality.
So choose: C.