"Who's the conductor of this bus?" he said, and paused for a reply.

• A. e said who the conductor of that bus was and paused for a reply.
• B. e asked who was the conductor of that bus and paused for a reply.
• C. e asked whether who the conductor of that bus was and paused for a reply.
• D. e asked who the conductor of that bus was and paused for a reply.