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Using Ivana's solution, given that it is correct, what must be the dividend?

A. x4 + 2x3 4x2 + 6x

C. XA + 2x3 + 4x² + 6

B. x4 + 2x3 - 4x + 6

D. x4 + 2x3 - 4x2 + 6​