If $\frac{x+3}{(x+1)\left(x^2+2\right)}=\frac{a}{x+1}+\frac{b x+c}{x^2+2}$ then $a-b+c=$

• A

  $0$
• B

  $1$
• Correct answer
  C

  $3$
• D

  $2$

Hence, the correct answer is option: 'C'.