Sentence Correction (SC) | Re: The rules of rugby are more liberal than soccer.

My answer is (D). It took me 13 seconds.

For Apple-vs-Apple comparison, we can write:
The rules of rugby are more liberal than the rules of soccer.
= The rules of rugby are more liberal than those of soccer. (D)

(AE) Not Apple-vs-Apple comparison
(BC) "More ... than" should be used.

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