ndicate whether each of the following C# programming language identifiers is legal or illegal. If it is legal, indicate whether it is a conventional identifier for a class.

a$.$ electricBill, Legal $($Unconventional$)$

b$.$ ElectricBill, Legal $($Conventional$)$

c$.$ Electric bill, Ilegal

d$.$ Static, Legal $($Unconventional$)$

e$.$ void, Illegal $($Reserved$)$

f$.$ #ssn$,$ Illegal $($#$)$

g$.$ Ay$56$we$,$ Legal $($Unconventional$)$

h$.$ Theater$\_$Tickets, Legal $($Unconventional$)$

i$.212$AreaCode, Illegal $($Start with number$)$

j$.$ heightInCentimeters, Legal $($Unconventional$)$

l$.$ Void, Legal $($Unconventional$)$