It seems A was correct answer.
Reference: https://circleci.com/blog/git-detached-head-state/
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
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Highly Voted 10 months agolznlxl
Most Recent 10 months, 3 weeks agocj_kuo
10 months, 3 weeks ago