-1
-2
-3
-4
Correct answer is D
\(x + 3 = 0 \implies x = -3\)
Using remainder theorem, if x + 3 is a factor, f(-3) = 0.
\(f(-3) = (-3)^{3} + 3(-3)^{2} + n(-3) - 12 = 0\)
\(-27 + 27 - 3n - 12 = 0 \implies -3n = 12\)
\(n = -4\)
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