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Look at these details from a paragraph about the same topic:
• A sheep's wool coat can be used to make yarn that keeps you warm.
• Yarn can also be made from rabbit or goat hair.
• Even camel hair can be used to make yarn.
Choose the main idea that ties all the details together.
A. Sheep's wool is often turned into yarn.
B. Yaks and buffalo have hair that can be turned into yarn.
C. Yarn can be made from the fur of different animals.
D. Yarn can be made from different types of plants.​