If $\tan (A - B) = 1$ and $\sec (A + B) = \frac{2}{\sqrt{3}}$,then the smallest positive value of $B$ is

  • A
    $\frac{25}{24}\pi$
  • B
    $\frac{19}{24}\pi$
  • C
    $\frac{13}{24}\pi$
  • D
    $\frac{11}{24}\pi$

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