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the answer is A

Explanation:

if you look at the start date of the byzantine empire it starts around 330, then the end date of the sasanian is around 636

A. 330 - 636

While the Byzantine Empire first appeared in 330 CE the Sassanian empire was around by then still. They stopped coexisting when the Sassanian Empire fell in 636 CE

i discarded the supernatant and kept the pellet in this part of the experiment because you have to return all unused chemicals into their original containers at the end of each labratory.

explanation:

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