यदि $f(x) = \int_1^x \frac{1}{2+t^4} dt$ है, तो

  • A
    $\frac{1}{18} < f(2) < \frac{1}{3}$
  • B
    $f(2) < \frac{1}{2}$ या $f(2) > 2$
  • C
    $f(2) < \frac{1}{3}$
  • D
    $f(2) > \frac{1}{3}$

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