GMAT Sentence Correction (SC) | Re: About 5 million acres in the United States have been invaded by leafy

Hi Shraddha

I read another related post on this from you:
https://gmatclub.com/forum/verb-ing-mod ... 35567.html

Does this mean that A without comma before verb + ing phrase would have beencorrect?

About 5 million acres in the United States have been invaded by leafy spurge, a herbaceous plant from Eurasia with milky sap