જો $a$ એ $\sin^2 \theta - \sin \theta + \frac{1}{2}$ ની ન્યૂનતમ કિંમત હોય અને $b = \lim_{x \to \infty} (\sqrt{(x + 1)(x + 2)} - x)$ હોય,તો $|2a + b| = $

  • A
    $3$
  • B
    $-2$
  • C
    $4$
  • D
    $2$

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