John asked Mary if it was the blue one or the green she wanted.

• A. “Which one did she want, the blue or the green, Mary?” asked John.
• B. “Which one did you want, the blue or the green?” asked John.
• C. “Which one does Mary want, the green or the blue?” asked John.
• D. “Which one do you want, the blue or the green, Mary?” asked John.