यदि $g(x) = (x^2 + 2x + 1) \cdot f(x)$ इस प्रकार है कि $f(0) = 5$ और $\lim_{x \to 0} \frac{f(x) - 5}{x} = 4$, तो $g'(0) = $

  • A
    $20$
  • B
    $12$
  • C
    $18$
  • D
    $14$

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