What is the difference in meaning between ‘I haven’t finished yet’ and ‘I still haven’t finished’?

A. The first means completion is not possible; the second implies a future attempt.

B. The first suggests a lack of effort; the second indicates a decision to delay.

C. The first is a statement of fact; the second is a question about progress.

D. The first implies imminent completion; the second emphasizes ongoing incompletion.