[QA] Hans told us about his investment in the company. He did it on his arrival at the meeting.

Question:

Hans told us about his investment in the company. He did it on his arrival at the meeting.

• A.
  Hardly had he informed us about his investment in the company when Hans arrived at the meeting.
• B.
  Only after investing in the company did Hans informs us of his arrival at the meeting.
• C.
  No sooner had Hans arrived at the meeting than he told us about his investment in the company.
• D.
  Not until Hans told us that he would invest in the company did he arrive at the meeting.