Consider the following functions:Function $1$:def add$\_$version$1($n$1,$ n$2)$:sum $=$ n$1+$ n$2$return sumFunction $2$:def add$\_$version$2($n$1,$ n$2)$:sum $=$ na $+$ n$2$print $($sum$)$a$.$ What will be the output in the following programs?n$1=10$n$2=20$n$3=$ add$\_$version$1($n$1,$ n$2)$print $($n$3)$Output: $303$:$194$ Chromen$4=30$n$5=50$n$6=$ add$\_$version$2($n$4,$ n$5)$print $($n$6)$Output: $80$Noneb. Explain the difference between add$\_$version$1$ and add$\_$version$2.$