Change the direct narration into indirect narration: Amita said, "I can't possibly finish my work by five o'clock."

• A.  Amita said that she can't possibly finish her work by five o'clock.
• B.  Amita said that she won't possibly finish her work by five o'clock.
• C.  Amita said that she couldn't possibly finish her work by five o'clock.  
• D.  Amita said that she hadn't been able to possibly finish her work by five o'clock.