What, if anything, is wrong with this code?

$m{y}_{a}ge=$ input$(Enteryourage$:$)$

myNewAge $=$ int$(m{y}_{a}ge)+5$

print$("$In $5$ years you will be$",$ myNewAge, $".")$

Select one:

a$.$ commas are used in the print$()$ function that should be $+$

b$.$ nothing is wrong with this code

c$.$ cannot mix camel case notation with underscore notation

d$.$ cannot change my$\_$age to an int