GMAT Sentence Correction (SC) | Re: VERB-ING MODIFIERS PART 2 In our first article on verb-ing

Ok I get your point now. And I maintain my previous answer, yes you can use more than one modifier for a single entity.

However here it has to do with the meaning of the original sentence.

Notice why statement A is wrong? Only because WHICH doesn’t come with it’s own COMMA. "most of them ..." is modifying the 80 massive planets, WHICH is also modifying the same entity. We know that WHICH must always come with a COMMA. However notice how “most of them…” comes with 2 commas,
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