Peter told us about his leaving the school. He did it on his arrival at the meeting.

• A. Only after his leaving the school did Peter inform us of his arrival at the meeting.
• B. Not until Peter told us that he would leave the school did he arrive at the meeting.
• C. Hardly had Peter informed us about his leaving the school when he arrived at the meeting.
• D. No sooner had Peter arrived at the meeting than he told us about his leaving the school.