Q:

The Principal asked me whether I had informed the Chief Guest the revised schedule the day before. 

• 1
  The Principal said to me , " Have you informed the Chief Guest the revised schedule yesterday ? "
• 2
  The Principal said to me , "Did you inform the Chief Guest the revised schedule yesterday ?"
• 3
  The Principal said to me , "Did I inform the Chief Guest the revised schedule the day before."
• 4
  The Principal said to me , " Have I informed the Chief Guest the revised schedule the day before ? "