Consider the recursive equation M$($n$)=3$ M$($n$-2)+1.$ Expanding the term M$($n$-2)$ once on the right hand side gives M$($n$)$ as

Question $10$ options:

M$($n$)=9$ M$($n $-4)+4$

M$($n$)=3$ M$($n $-3)+1$

M$($n$)=9($M $-4)+2$

M$($n$)=9$ M$($n $-2)+1$