Unlike the Shiites, who constitute the other major branch of Islam, the Sunnites do not await the Mahdi as a messenger from God, nor do they endow him with divine qualities or immunity from failure in judgment.
(A) nor do they endow him
(B) but they do not endow him
(C) neither do they endow him
(D) and they neither endow him
(E) while endowing him neither
Does 'they' specifically refer to 'Sunnites'
yes. They refers to the Sunnites since they appeared right before this. If it were to refer to the Shiites i think the part would need to mention the Shiites again to be correct.
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