Your answer: A. that only descendants of Muhammad should be caliph Source/Proof: Both sides agreed that Allah is the one true God and that Muhammad was his messenger, but one group (which eventually became the Shiites) felt Muhammad's successor should be someone in his bloodline, while the other (which became the Sunnis) felt a pious individual who would follow the Prophet's customs was acceptable. (Link:https://www.nbcnews.com/news/mideast/what-are-differences-between-sunni-shiite-muslims-n489951)
