दिए गए सीमा (limit) का मूल्यांकन करें: $\mathop {\lim }\limits_{x \to 0} \frac{ax + x \cos x}{b \sin x}$

  • A
    $\frac{a+1}{b}$
  • B
    $\frac{a}{b}$
  • C
    $\frac{b}{a+1}$
  • D
    $\frac{a-1}{b}$

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