If your downloading on a private tracker where ratios are counting then downloading the one with 100 leechers is probably a smarter idea. The 40 might be faster but you may not have the opportunity to seed as much.
Crew A is the one you want cause you know that person has all of the file. I'm pretty sure C is the same as A because on most places seeds count as peers so it should actually be 1 0 1 not 0 0 1.
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