Select the illegal variable name
Options
2my-first_name = "John"
my-firstname = "John"
_my-firstname = "John"
my2-first_name = "John"
The above mentioned variable names all are invalid then how we can select one.

Kindly suggest or change
Select the illegal variable name
2my-first_name = "John"
my-firstname = "John"
_my-firstname = "John"
my2-first_name = "John"
Kindly suggest or change