यदि $\frac{x+3}{(x+1)(x^2+2)} = \frac{a}{x+1} + \frac{bx+c}{x^2+2}$ है, तो $a-b+c=$

  • A
    $0$
  • B
    $1$
  • C
    $3$
  • D
    $2$

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