A real valued function $f(x)=\left|x^2-3 x+2\right|+2 x-3$ is defined on $[-2,1]$. If m and M are absolute minimum and absolute maximum values of $f$ respectively then $\mathrm{M}-4 \mathrm{~m}=$

• A

  $0$
• B

  $1$
• C

  $15$
• Correct answer
  D

  $10$

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