question_answer

Find the value of\[\frac{{{3}^{n+1}}-{{3}^{n}}}{{{3}^{n+2}}-{{3}^{n+1}}}\]

A)  \[\frac{3}{2}\]                         

B)  \[\frac{2}{3}\]

C)  3                                

D)  \[\frac{1}{3}\]

E)  None of these