What is the complete factorization of the polynomial below?

x^3 + 2x^2 + 4x + 8

A. (x-2) (x+2i) (x-2i)

B. (x-2) (x+2i) (x-2i)

C. (x+2) (x+2i) (x+2i)

D. (x+2) (x+2i) (x-2i)

Tell whether the number is prime or composite 68

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