Misuse of NOT in TC Question

Test 1 TC Walkthrough Section 4: Question 5

"The significance of the Magna Carta lies not in its ____ provisions, but in its broader impact: it made the king subject to the law.
A) specific
B) revolutionary
C) implicit
D) controversial
E) finite

I was able to correctly follow the strategy and was left to choose between A) Specific and C) Implicit. I originally had specific down because it was the opposite of broader, but because of the “not” three words down I chose what I thought to be close to the opposite (although implicit would be a poor choice).

So the main question is why does the word “not”, not cause the blank to be the opposite of what should be in there based off the math strategy.

Thanks

Thanks for asking with a good level of detail

Please can you clarify the question.

Your current question assumes the math strategy doesn’t work for this question, which isn’t accurate