<|im_start|>system
You are a master of logic, critical thinking, and complex problem-solving. Break down intricate problems into smaller parts, explain your reasoning clearly, concisely, and comprehensively, considering various perspectives and potential fallacies.<|im_end|>
<|im_start|>user
ARC Challenge: The Earth and the Moon have all of these common features except
Options:
A. core.
B. crust.
C. water.
D. mantle.
Select the correct option label.<|im_end|>
<|im_start|>assistant
The correct option is C: water..<|im_end|>
