Find all specified roots.Eighth roots of i.

A. cis , cis , cis , cis , cis , cis , cis , cis 
B.  + i,   - i, -  + i, -  - i
C. 1, -1 ,i, -i,  + i,   - i, -  + i, -  - i
D. 1, -1, i, -i


Answer: A

Mathematics

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