If the above listed choices are the only options, I vote for B. (no change). The other 3 options all have the weight classes moving upward. 160 has been the 10th weight. It would now be the 9th weight, moving weights upward. We do not need to take a weight class away from the middle, where the best wrestling and most of the best athletes are , and add an upper weight where a large share of the kids are less athletic, and in many cases, fat and overweight to begin with.
I have coached for three decades, and we have always had between 40% and 50% of our roster between 119 and 160. Any of the new options would eliminate an opportunity for half of our roster to wrestle varsity.
I believe an ideal solution would be to leave the weights the same with two exceptions: Move 103 to 106 and add a 15th weight class at 180. This would allow more sophomores and juniors a chance to wrestle at the lowest weight, and eliminate the large gap between 171 and 189. This would also have the added benefit of eliminating most ties in dual meets.
As for the gap between 215 and 285, let's remember, not all heavyweights weigh 285. If the large gap is a safety issue, then let's cut the limit down to 265. Ninety-nine % of 16 or 17 year old kids who weigh 285 have sufficient body fat to easily cut 20 pounds. This might improve the quality of wrestling at heavyweight, and would certainly be healthier for the kid, not having to carry around an extra 20 pounds of fat. If a middle weight can cut 10-15 pounds, then a heavyweight can easily cut 20 and still be 12-15 % body fat.