If $a=|\bar{a}| ; b=|\bar{b}|$ then $\left(\frac{\bar{a}}{a^2}-\frac{\bar{b}}{b^2}\right)^2=$

• A

  $\left(\frac{\bar{a}-\bar{b}}{a^2 b^2}\right)^2$
• Correct answer
  B

  $\left(\frac{\bar{a}-\bar{b}}{a b}\right)^2$
• C

  $\left(\frac{b \bar{a}-a \bar{b}}{a b}\right)^2$
• D

  $\left(\frac{a \bar{a}-b \bar{b}}{a^2 b^2}\right)^2$

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