GMAT Sentence Correction (SC) | Re: Within the Green party,an internal debate is raging among

Within the Green Party,an internal debate is ragingamong those who believe in compromising with mainstream politicians in order to achieve some goals with those who believe the party must not abandon any of its principles.

A. among those who believe in compromising with mainstream politicians in order to achieve some goals with those who believe the party must not abandon any of its principles.

B. among those who believe that achieving some goals requires compromise with mainstream politicians