Mr. Brown said, "Could you please look after my suitcase for about half an hour?"

• A. Mr. Brown asked me if I was pleased to look after my suitcase for about half an hour.
• B. Mr. Brown politely told me to look after my suitcase for about half an hour.
• C. Mr. Brown ordered me to look after his suitcase for about half an hour.
• D. Mr. Brown politely asked me to look after his suitcase for about half an hour.