Your (A and (B) mean the same thing or, alternatively, (A) is wrong. (C) makes no sense, because every peer-reviewed study is, at some point, not peer-reviewed. As to (D): this outfit is recommending Ivermectin without any proof that it works, and therefore not a science-based institution from the start.
However:
> The trial originally tested the results from a single Ivermectin dose in January this year, but was later changed to involve one daily dose for three days of 400 micrograms of the drug for every kilogram
So the dose was actually within the range your FLCCWTF recommends, which is “0.4–0.6 mg/kg”. Only it was given for three days instead of five, with the difference easily explained by one group choosing the regular dose that Ivermectin has been proven mostly safe at.
If it has no effect when taken for three days, it isn’t going to do wonders when taken for five.