question_answer

What should be subtracted from \[\frac{a}{b}\] so that the resulting fraction will be reverse of the fraction?

A)  \[\frac{ab}{{{a}^{2}}\,-\,{{b}^{2}}}\]                      

B)  \[\frac{{{a}^{2}}\,-\,{{b}^{2}}}{ab}\]

C)  \[{{a}^{2}}\,+\,{{b}^{2}}\]             

D)  \[{{a}^{2}}\,-\,{{b}^{2}}\]

E)  None of these