Option (A) is excessively wordy and uses redundant adjectives “unexpected” and “unanticipated,” which mean the same thing, as well as the unnecessarily formal “implicational consequences.”
Option (B) is more concise but uses “unanticipated consequences” which could be simplified to “unexpected implications” for brevity.
Option (C) repeats the redundancy “unexpected and unanticipated,” adding no new meaning.
Option (D) is the simplest and clearest: it removes redundancy, uses straightforward vocabulary, and maintains the full intended meaning.
Hence, (D) is the correct choice for being both concise and precise.