GMAT Sentence Correction (SC) | Re: In theory, international civil servants at the United

In theory, international civil servants at the United Nations are prohibited from continuing to draw salaries from their own governments; in practice, however, some governments merely substitute living allowancesfor their employee's paychecks, assigned by them to the United Nations.

(A) for their employee's paychecks, assigned by them - Modifier assigned by them illogically modifies paychecks ; Pronoun them refers to government and means that paychecks are assigned to the United Nations
(B) for
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