$(\bar{a}+2 \bar{b}-\bar{c}) \cdot\{(\bar{a}-\bar{b}) \times(\bar{a}-\bar{b}-\bar{c})\}=$

• A

  $[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}]$
• Correct answer
  B

  $3[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}]$
• C

  $[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}]^2$
• D

  $2[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}]$

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