What is executed first, Sort and Limit or Deduplication?

let's say two duplicates exist in the target data extension if random sampling was to run first, then some duplicates could be removed by this process without using deduplication rules when using deselect this is not the case to make sure the results of a selection are deduplicated properly, deselect first runs deduplication and then performs random sampling note to apply random sampling, click the gear icon on the target definition screen and choose https //support deselect com/hc/en us/articles/360016494358 can i do a b testing with deselect