Multiply.(x - 4)(x + 1)(3x + 3)

A. 3x3 + 6x2 + 21x - 12
B. 3x3 - 6x2 - 21x - 12
C. 3x3 - 21x2 - 6x - 12
D. 3x3 - 12

Answer: B

Mathematics

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