Question

Is my answer correct ?

I believe it’s either (B) or (C)

Answer 1

The answer is b (-i )

Answer 2

Answer is choice B) i

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Divide 77 over 4 to get
77/4 = 19 remainder 1

The remainder 1 tells us that i^77 = i^1 = i

So in short, i^77 = i