In the following question, a part of the sentence is in Bracket . Below are given alternatives to the word in bracket part. Choose the correct alternative which may improve the sentence. In case no improvement is needed our answer will be no improvement. Question We (have been retracing) our steps to the log cabin ten minutes ago.

• A. will be retracing
• B. No Improvement
• C. had to retrace
• D. have to retrace